Just browsing the RAZR forum for any updates on your updates.. Saw your post.
I've used FoxFi for xBox, Bf3 specifically. The only con that I found? The xBox only remembers one wifi at a time. Other than that it was terrific, 4G is fast enough to allow online gaming on huge maps with flawless Gameplay, there was no lag at all. Of course, this was from my Bionic, but considering we're practically brother-phones it should be the same.
The data?
20MB per HOUR. Amazing, isn't it? Don't even know how it was possible. The only thing is you should probably charge your phone in 30 minute cycles to prevent overheating.