Silver Shells is very nice...we've stayed there before, and last year we stayed right next to it at Sterling Shores. (it wasn't beachfront, you had to cross the Back Porch parking lot to get to the water, but it was a lot cheaper...and I still had an oceanview...the Destin photo album in my sig has some pics of this unit).
I want to stay in a rental home in the Crystal Beach development next time we go...it looks so fun down there!