Looking for a sunglass

My Hubby has a nice pair of D&G sunglasses, They are black and have D&G in Chrome on the sides.... I dont have any pics of them but they have a nice selection of mens sunglasses.
 
The picture on the left and in the middle is the same model (Prada 50HS) and the one of the right is a bigger version of that (Prada 65HS).

50HS 58-12-135
65HS 61-14-135

which should i pick? i find the 50hs better