The first mirror I tried was a cheap bar-end mirror, I forget the brand. While it afforded a marvelous view of my left elbow, it was pretty useless for seeing traffic behind me, and it would slip out of alignment if I rode over a bump or rough pavement. Then one day it dawned on me that I had a beautifully machined CRG bar-end mirror sitting in a bin of unused motorcycle parts, and that both kinds of bikes had 7/8 inch bars. I tried it out, it fit, and I've been using it ever since. It doesn't vibrate, it doesn't move unless I move it, there's a nice large field of view, and it even folds in to keep it out of harm's way when it's not in use.

I use the Take-a-Look eyeglass mounted mirror. It is quite useful for long distance touring and works well as a commuter mirror. That said, mirrors are not a substitute for direct visual contact. Always look over your shoulder.

Not so. Head mounted mirrors mean no blind spot....it's not like driving a car.

Not so. Head mounted mirrors mean no blind spot....it's not like driving a car. Look over your shoulder if it makes you feel safer but it is not necessary.

Sometimes it's hard not to after all the years of head checks in a car but that's only cause it's a reflex.

I have no idea what brand or model this is. Rivendell Bikes sells it as "German Mirror". I can make out traffic quite clearly within 100 ft, which is great for where I ride. I almost never ride on roads with speed limits above 35 mph. I doesn't move, even when I'm riding on frozen, pitted footpaths so rough that my fillings are moving in my teeth. I tried mounting it on my fork at first (seemed less dorky), but all I could see was my leg. Once I moved it to the bars the view opened up to include three road lanes, and none of me.