I've just purchased two SP Gt 2.0 pros. I was looking at the 2.1 EXs but the blurb says its for 12th/WGC and with a small headsink i was a bit concerned it might get a hot, so decided to go with the 2.0
I think all the team drivers still run the 2.0 pro too, maybe one will be kind enough to pop in and confirm