I don't have the Vibrant, but I have seen video and pictures of the Touch wiz UI and I don't see what is wrong with it. Looks fine to me.I like Sense on my EVO, but Touch wiz seems to be ok too. I think the Galaxy S series hasn't gotten the respect it deserves because it's made by Samsung. If Motorola or HTC had made it, out would haver been considered one of the top smartphones out there.