I wasn't nearly as critical or analytical back when Deron played and so I'm probably not remembering him correctly. To me he was basically the perfect player. Smart, tough, good size for his position, great shot, great distributor, great first step. He seemed to always bring it when it mattered. I remember him being a pretty good defender, but might be wrong about that.
I love Donovan as well, and it was fun watching him go nuclear and basically be unstoppable at times. However, his lack of defense really bothers me and is what makes me pick Deron over him.
Funny enough we had a company picnic the other day and there was a guy there that looked just like Deron. It was a little awkward when he caught me staring at him a couple of times.