I don't have a strong prescription, but have wondered if there are pros to having the prescription inserts with something like Rudy Projects...I gotta have photochromic and REALLY do not like the full frame. I always seem to have a blind spot from the bottom of the frame when I'm trying to see cars behind. Seems like having inserts would make for the same issue, but they're so much cheaper than the wrap-arounds with prescription built-in.