I found these reviews of Handmark's Tweetcaster beta.

Has anyone dumped Twidroid or Seesmic for this? I'm only using Swift and it's okay for now.

Matthew Miller @ ZDNet video review
Phil Nickinson @ AndroidCentral w. screenshots

The multiple accounts feature is nice. When it's available as a full version, it's reported there will be paid and free/adware versions.

Which twitterers give you decent reviews or leads on top apps?