I can't stand any of the manufacturer skinware that I've used in person, and though the reviews do speak more positively of the newer Touchwiz, I couldn't see myself buying a phone that wasn't either stock Android from the factory, or easily loaded with CyanogenMod. If I had to pick one of those, the Sammy looks like the winner, since I don't think the Pentile display thing is a serious issue at these resolutions, and the better camera and slightly less annoying skin would outweigh anything on HTC's side of the ledger.
Has anything leaked about the next Nexus device (successor to the Galaxy Nexus)?