If you liked the 8MP quality, I suggest switching to the Motorola Electrify. Although I'm not sure of the comparison of AMOLED and qHD screens between the phones (Mesmerize has AMOLED - Active Matrix Organic Light Emitting Diode), but the Electrify does have the better resolution camera.
As far as the Mesmerize, for the price and age of the phone, it takes some darn good pictures in my opinion (and LaTuFu's as well, apparently).