Never heard of the Hafnys' before. I use a Cateye type. Only "older people" use mirrors? Hmmm. Kind of hard to drive a semi-truck without them and lots of 30 year old drive those. With more noiseless electric cars out there one would think mirrors would be even more of a neccessity on a bike, especially on vehicle shared roads (not bike paths). I feel naked on a bike without one. Will try a Hafnys' if I can find one!