Having used it for a week or two now, I can tell you that this is a game changer. The Rezound was great under GB, but under ICS it is like a different phone. Everything is smooth and fast...Menus fade in and screens transition smooth in an iOS-esque way. Everything is faster. On the rare occasions something crashes, it recovers instantly. The menus are all consistent now as well. If you are not looking forward to this update, you should be.