Back in the 80s I bought a "Third Eye" helmet mounted mirror and was generally pleased with it. But last week I encountered a swarm of gnats on the trail and as I swatted them away from my face I also swatted away the mirror, and destroyed it. After 30+years it was like I lost an old friend . . . .
I looked at possible replacements, decided to try the "Take-a-Look" mirror, and after the first ride I am sold on it. Far better field of vision and much more stable than the helmet mount. The old mirror would vibrate and sometimes shift out of place on larger bumps. It will take a bit of getting used to attaching it to my glasses each time but I like the result.