I've only had my X for a little less than 2 months but I've been following the discussions regarding the GB upgrade and from what I can read, I don't see any clear-cut reason to upgrade. The only certain benefit that I see to upgrading is being able to sort contacts by their last name. The other changes either seem trivial (like the color scheme changes) or are not being universally experienced (battery life and other performance issues). Am I missing something? If there weren't so many reports of problems, I'd upgrade just to get sorting by last name (though I'll never understand why that wasn't included from the very beginning). But if that is really the only certain benefit, the upgrade seems to be pretty risky. Again - am I missing something?