I really don't care about the GPU. I play games once in a while, but they're a waste of battery more than anything to me. Faster web browsing, faster apps, and a smoother overall performance are all I really care about.
In the end that's why I just jumped in with a GSII. The phone performs beautifully on T-Mobile. I still have a week to return it if somehow the Nexus is coming to T-Mobile and it's that big of a jump forward, but I'm doubting that. I just want to know that I can get ICS on my GSII and I'll be happy.
Today's conference is more about ICS than the phone for me.