Escape, Encore for Caribbean. Bliss and Joy were designed for Alaska and other seasonal climates in mind. In my experience they aren't so different but someone putting that fine a point on it might see it differently.
As for (non-haven) wow factors, my list includes Spice H20 (with the grotto, not the giant hot tub on the Joy), the go kart track, the Broadway based shows, Howl at the Moon, Cagney's Steakhouse, Food Republic, and the suite we had on the Joy. SC category - Cabin #14756 for those scoring at home. Teppanyaki is always fun even if the menu/show is the same.
The one thing to avoid is the NY Strip on the Main dining room everyday menu. It's been a frozen reheated puck of alleged meat for going on three years now. Order anything else.