I'm deciding between the Nikon 50mm 1.8d and 1.8g for my D90. Most of the reviews seem to say the "g" is sharper (and better overall except for more distortion). However, the dxomark website gives the "d" a better rating than the "g". Since I'm a bit new to the ratings game, I don't know who to trust (as if it wasn't difficult enough to choose already). Please help if you can! Thanks in advance.