I also tried the Italian Road Mirrors to replace the Sprintechs, which I found constantly required a slight readjustment due to road vibrations. I agree that the IRMs required too much effort to install. I also found the field of view too small on both mirrors requiring lots of double-checking. I'm no Spring Chicken (68) so my reflexes aren't as sharp as a younger person's. And the number of vehicles without daytime running headlights is surprising.

I'm currently using an adjustable $10 mirror on my road bike, similar to the Mirrcyle, which I have on another bike. Great wide-angle field of view, leaving no doubt as to what you're seeing. A tip for the Mirrcycle when you have to constantly fold the mirror in and out when transporting - when you get the mirror perfectly adjusted, paint a stripe with bright red nailpolish. Sure makes for speedy realignment. Just line up the stripes, tighten with the hex key and perfect alignment.