FlashGet is the best torrent manager because it has 90% of the features a download manager needs to have. It supports sheduling, automatic shutdown, etc and it supports the following ways to download file:
HTTP
FTP
HTTPS
MMS
RSTP
ED2K
BitTorrent
Support for Username and Password
Approved by all private trackers
Intergration with iexplore.exe and Mozilla Firefox
data retriever
And it works in wine.
Its the most stable and reliable download manager ever invented.
If you want metalink support and a better youtube video grabber at the cost of a slightly less stable structure(still better than DTA, D4X, DAP, Azereus, etc), try Orbit Downloader.
But if you want to deal with torrents exclusively and can't bear to spend 6mb extra space, try ʊTorrent, which also works on wine. And deluge is also good, and the second choice after ʊTorrent.