That's a very handy site. I checked out some upgrade options, but sadly, my current contract doesn't run out for another nine months.
I still really like my current phone, except for the battery life. Apparently, the battery concerns are pretty common knowledge on my phone. Had I known that ahead of time, I would have opted for the model with the bigger battery. Early next year, I'll be back to the site to help decide which phone to buy next.
The only thing I'm not sure of with the site, is if there's any value between phone purchases. It seems like a shame when people essentially don't have any reason to go to the site more often than every two years.