Which is the best Bittorrent client?

I got a call from a friend the other day, he wanted to know the best torrent client to use. I gave him a short answer, µTorrent. Actually µTorrent has now been acquired by BitTorrent Inc. so lets refer to it as BiTorrent client from now on. I have to mention both these clients because, initially µTorrent was written in C++ and was a closed source freeware. Before BitTorrent acquired µTorrent around end of 2006, before then BitTorrent client was written in Python and it was an open source client.

I have used many torrent clients over the years, Azureus, Opera, BitComet, KTorrent, µTorrent. i find BitTorrent to be the least resource intensive and also the amongst the best featured clients out there. Even the installer file is only 853KB. Imagine that,nowadays you don't find that many installers which you can put on a floppy disk.

BitTorrent gives you all the features which you may have been using on other clients, in a very efficient and small package, and it does not have a huge memory signature as some of the famous clients like Azureus.