I loved me some Dez. He was so physical, watching him was always entertaining. Those jump balls and back shoulder fades in the end zone, that was good stuff. I also loved when he caught a short pass or screen, and he used his strength to throw a receiver off of him and turn it into something big. Oh, and don't forget the punt returns early in his career.
I love me some Amari, too. Different kind of receiver, but man, he is so smooth. I could watch him run routes all day.
I guess if we have to vote on who's most fun to watch, I would go with Dez. He always had the big splash plays. Amari gets it done, but he's way more low key. Not that that's a bad thing.