I've been using BlogBridge as my default aggregator for several weeks now. They've issued new versions pretty frequently, and I've appreciated the little improvements with each one. The latest (2.5) has made some useful tweaks to the look and feel and I'm liking it a lot. There were some gremlins in earlier versions but these seem to have been sorted out now.

One of the big benefits of BlogBridge is the ability to synchronise my laptop and desktop over the web. This means when I'm on my travels, my laptop knows exactly which posts and feeds I've read and not read at home.