Still using mine and it's still getting updates from Google so there's not really a reason to switch. So I don't have 4g and still have waaaaay more features and power than most phones, meh.
I just tried Plume as I usually use TweetDeck and the differences are obvious. Plume looks like a 4 year old designed it and it's just twitter, TweetDeck is much more refined and you can use other services besides twitter.