So, I'd really like to get a rearview mirror, but I'm undecided on a helmet mirror or one that attaches to the handlebar. A "bar end" attachment isn't an option.

I tend to think the helmet mirror would drive me crazy dangling out in front of me, but I'm not sure.

Any preferences and recommendations? My bike is a Giant Roam 2.

I've used both but currently I'm relying on handlebar end mirrors.

The nice thing about a helmet or eyeglass mirror is that you can direct the range of view by moving your head. The bad thing is you have to train your brain to see the little image in the mirror. It sometimes helps for me to close one eye. Once you get used to seeing the image in the mirror, it isn't a problem.

The nice thing about handlebar mirrors is that the image is a lot bigger. You can steer the view to the rear a little bit (but not very darn much) by moving the handlebars. If I pass another rider while riding my recumbent I have to get pretty far ahead of them before I can see them and know that it's safe to pull back over.

With either style there are variations in mounting and adjustment. The better ones are much more solid and well worth any extra cost. My favorites have been Take-A-Look eyeglass mirrors and Mirracycle handlebar mirrors. Some time soon I plan to buy some additional Mirracycle mirrors to mount on the other side of my recumbent handlebars.

Well, first we'll need pics of your bike. Drive-side, of course.

Seriously, I've tried all types, and I like a helmet mirror best.
And the Hubbub is the best of the helmet mirrors, IMO.

Ride safe. Watch your six.

I alway wear protective glasses when riding my bicycle as motorist kick up stones. I have a Take-A-Peak Mirror that has served me well over 20 years. Back then they were $5.00.

I'm not a mirror user myself.

I did try a bar mounted mirror a while ago. I found that my riding position made using the bar mounted mirror inconvenient, and I might as well just look behind myself.

I have pondered helmet or glasses mirrors, but at the moment, I'm pretty good at paying attention to cars by looking and listening.

I use a bar end mirror and it works great. I think mirrors are more important than helmets because they can prevent crashes while helmets can offer some protection when a crash occurs. I wouldn't ride without one and most people i know who use a mirror say the same thing.

I'm satisfied with my Mirrcycle bar-end mirror. Once I have it adjusted to a good viewing angle, I have no trouble seeing who is coming up from behind and to the left. I'm too clumsy to trust myself with a helmet-mounted mirror - guaranteed it'll get broken off within a month.

I always look over my shoulder to confirm that I'm clear to change lanes or turn left after the pre-check in the mirror.

I like the Take-A-Look mirror. It mounts to your glasses, but there's an adapter sold separately that also allows a helmet mount. Since I always wear glasses of one sort or another, I've not tried the helmet mount option. I prefer glasses/helmet mounts because I can take a quick look to the rear without changing my head position as much as I need to with bar-end mirrors.

+1000

I use Third Eye helmet mount, or ball cap visor mount. Only took a few days to get it set up right and get used to it. After a few weeks it was like second nature, I don't even think about it. Triple like.

I like Third Eye as well. It looks slightly less dorky than the Take-a-look.

I hated it for the first week, even gave up for a few months then tried again.

I've been hooked for years now. I totally know what's going on behind me at all times. Wouldn't ride half the places I do without one.

Take-a-look helmet mounted. I have multiple bikes, but one helmet, so no adapting between bikes. These days I mainly ride a drop bar rando bike and MTB, but I learned to use a mirror riding a recumbent, where turning to look back is not an option, so I quickly gained skill and confidence scanning with the mirror.

As I get older, and traffic gets heavier, and I ride for utility, looking over or under my shoulder is both more difficult and not adequate. I need to scan 360, something you can't do with a handlebar mirror.

I like the Take A Look. I use Oakley sunglasses and the arms are too big for the mirror to mount to, so I zip-tied my mirror to the side of my helmet. Love it like that. Never knock it off. Just have to adjust it from time to time. I'd rather ride naked than ride without my mirror.

The HubBub mirrors get great reviews.

HubBub Helmet Mirror | HubBub Custom Online

That said, I have one that I have used a couple of times that I will likely sell. I have trouble focussing on the mirror because of some problems with close up vision

EVT | Safe Zone Mirror big .. so larger viewed area , attaches to your helmet with zip ties as shown..

These are the best hands down.

I've used the Tiger Eye helmet mount this year. First time I've ever ridden with a mirror and can't see me riding without it. These are made using old spokes as the mounting arm. As some have said, took a few rides to get used to it but it's second nature now.

These are small and very useful.

https://www.messengermirror.com/

I've got one of these, I like it.

Helmet Mirror | HubBub Custom Online

Take a Peak for me. I tape them to my riding glasses and they do what I want them to do. Since I use industrial safety glasses, the temples are a bit thick which is why I tape them. I prefer the mirror on the glasses rather than the helmet because I put my glasses in the helmet when not riding. If I put my helmet with attached mirror in my "to the ride duffle" I'd worry that the mirror would bend or fall off. I can also use different helmets because I use the same glasses.

Are the "Take-a-Peak" and "Take-a-Look" mirrors the one and same??

www.monkeymirrors.com

real glass mirror for the helmet. Works very well. stays put

As others have said, the helmet mirrors take some getting used to. I use a Take-A-Look clipped to a small piece of thin plastic. This assembly is secured to the side of my helmet with two zip-ties. (I don't currently have a camera or I'd post a picture.) The plastic could also be secured to the helmet with double-sided tape. If your helmet has a thin visor, you don't need any of these contraptions.

Bottom line, I find the mirror indispensable and well worth getting used to. It provides a real increase in safety as well as a psychological boost to know what's behind you.

I was checking out the Take-A-Look at my LBS through the package it's in. Is there a removable thin plastic film initially over the glass? If not, the quality of the mirror is terrible. And is it true glass? The guy at the LBS did not know and didn't want to open it to find out.

Well-described utility and advantages of an eyeglass-mounted mirror. I wear two, left and right: