uTorrent has to be hands down the best. Long time BitComet, BitLord, and Azureus user. By now you shouldn't be using the orginal bitorrent client.

Reasons why I say uTorrent is the best

- takes up less than 5mbs of memory. As I am leeching 2 torrents and seeding 2 the program takes up 3.8mb of memory. BitComet requires atleast 60mb!

- Almost no CPU usage. Not a resource HOG like Azureus means you can run this in the background with no problem.

- Awsome neat and clean GUI.

- Mulitple torrent orginization and useful stats not just a bunch of them like Azureus.

- the program requires no installation you just download and run the file. The program is 105kB!!!! I have essays that take up more space ;p!