Depending what features you are looking for, you might dig on
Deluge. It's cross-platform and runs on python so you don't have to use that memory-stealing java mess that is azuerus/vuze. I don't really care for the newest version of Deluge though, it seems to run pretty slow. The RSS importer is also in alpha, and while it does work fine for me, a lot of people report problems with it.
I've read a lot of good things about
Transmission too, and I'm probably going to give it a spin later tonight. Since upgrading, my upload speeds have been shit with Deluge. I don't know if my ISP is filtering me now or if it's the new version... of course, unless your on a Mac or Linux, you can skip that one.
I've also used
ABC in the past and thought pretty highly of it. I don't recall it having a lot of "features" though. I've also seen a lot of good talk about and people using
Bitcomment.
FYI, most of the peers I'm connecting to these days are running uTorrent. What specifically do you think you are missing?
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no fat chicks