i said junky, and they are kind of junky. if you're paying for a premium product (and with persols, you will be), then you might as well pay for something with good detailing and construction. i still think glasses prices in general are very inflated.
I havent found anything I've liked better than Cutler and Gross (maybe some Thierry Lasry). Yet I'll be completely honest, the best sunglasses I've had lens/sturdy/attention to detail wise were a pair of Maui Jims. I could drop those all day...while I baby the hell out of my Cutler and Gross. Wish they didn't have the logo all over the arms and lenses