Wow, look at all the celebs on this thread!
You are talking about two of my favorite resorts, the Dolphin and the WL!
The Dolphin was booked for the dates I needed in January 2003, so I did some research and got a super rate at the WL using a code. (didn't beat the great rates I've had in the past at the Dolphin however)
Anyway, as much as I adored the WL, I still prefer the S/D resorts and the Epcot location.
The Dolphin and the WL are two completely themed resorts.
At the Dolphin you really feel like you are on a tropical vacation. The color scheme is bright and lively and there are plenty of palm trees all around. And the Grotto Pool is a waterpark in itself.
The WL is like being miles (or should I say states) away from everything! We felt totally removed from all the action. There isn't a palm tree in sight! I felt like I was in the pacific northwest! Great ambiance, warm and inviting lobby, loaded with theming and charm. However, when we were at Epcot, I'd look over and see the Dolphin and feel home sick! Sounds weird, I know, but we've really come to love it there!
So......I am of no help in deciding! Sorry!
I love both resorts, with the Dolphin having an edge over the WL for it's location and transportation options.