Fast, _much_ faster downloads than I could get with Transmission. On par with Tomato Torrent.

Unfortunately (and understandably for a beta of a brand new Mac port) the UI needs work, features are limited, and there are many bugs - including one particularly annoying one where you cannot selectively download part of a multi-file torrent even if you've more than enough space for just that part. Right clicking also does not select an item so I'm constantly bringing up a contextual menu for the wrong item.

Still, µTorrent shows great promise and is an excellent effort for an app so new to the Mac. Once the bugs are ironed out I can see it replacing Transmission as my main BitTorrent client.