Now that I've left the iPhone world, I had to find a new client for Android.
I went through the included official client, back to the more enjoyable TweetDeck, until finally discovering and loving the crap out of Twidroyd.
new tweet (left), nearby tweets (right)
It's fast, configurable, and offers a unique two-pane view when the device is landscape oriented:
preview of single tweet
This preview is very flexible, and it'll fetch full tweets, content from linked pages, and even photos (no matter if they're behind an URL shortener). When you're on a WiFi connection it's really pretty slick.
The app is skinnable, comes with a bunch of different colour schemes, and generally works very well. So far I haven't seen its equal.
It comes in a free and pro version, but I can't really work out what the difference is. Apparently you get updates before the free version. An unusual upsell strategy.
Twidroyd App Store link
Twidroyd Pro App Store link