I have tried Mirrycle, and the pentagonal one by pyramid/SunLlite and generally despise the acrylic/plastic ones, I prefer glass far and away over plastic. If I'm going to have two, one that is flat not distorted for more apparent distance, makes good sense. Third Eye makes a bar mounted mirror, too, but it goes in the handlebar end. no one in bicycling has standardized mirrors, as on Motorcycles? In fact I went looking on Amazon for mirror mounts, for handle bars, there seem to be plenty, but there were NONE with actual photos of what you get. Why in hell is that, exactly?

No one wants to know what they are buying for $37 each? But it's better than motorcycles, there are some motorcycles that vibrate constantly to such an extent that mirrors of any sort are unusable, except momentarily, as you accelerate, but at least there are glass mirrors. I saw last night mirrors by Electra, for $17, that look like very nice mirrors (as mirrors go) glass, sufficiently long stem that you do not end up looking at your elbow or shoulder, as you ride, depending on the mount.

Got no advice, but as soon as you find a good choice tell me, so I can order them before Amazon raises their prices. (It always seems to me that after I add something to my wish list they raise the price on it while I research it, until I find out enough bad stuff that they have priced it too high, and when you want to remove it they want you to explain why. Idiots! And "you priced it out of all utility to me" is not a choice in their list of problems, either.