I personally think the new UI is great now that they have ironed out the initial large bugs. The mini list is still there, the detail list serves it's purpose and the grid view is pretty in that itunes-dukebox kind of way but not very practical. The categories are very handy and all your choices are stored on the steam cloud so they carry over between machines. I do wish you could assign a game to multiple categories though (action/co-op/fps/etc.) The best part of the new UI though is the ingame interface. As many have pointed out, the new browser - based on webkit rather than IE - is a marked improvement and it is even possible to watch youtube videos, ingame should you so wish. You are also treated to the much needed clock as well as friends, news specific to your current game as well as relevant links and current achievment progress. All in all there isn't much not to like as you can customise pretty much all of it to your tastes. If anyone was put off by their first couple of tries when the UI first launch, I'd suggest giving it another shot.