I'm waiting for some more Android phones to become available, so I'll have more choice:

http://en.wikipedia.org/wiki/Android_%28operating_system%29#...

I picked up a Dev Phone 1 (G1 / HTC Dream) last week, knowing full well that more refined devices are in the pipeline. I'll probably replace it for day to day usage in the not so distant future, but it'll stay relevant as a lowest common denominator for app development and testing.

I recently got the HTC Magic (G2). It's pretty sweet. The battery life is good, too. It lasts me all day with heavy use.

I'm waiting for the OpenPandora, http://openpandora.org/