qBittorrent can now be considered as a good alternative to other bittorrent clients. It provides a lot of features such as:
A polished Graphical User Interface written with Qt4 toolkit
UPnP / NAT-PMP port forwarding support
Encryption support (compatible with Azureus)
Multiple simultaneous downloads / uploads
Download from RSS streams
An integrated search engine
DHT (trackerless) support
uTorrent Peer eXchange support (PeX)
Directory scanning with automated download of torrents inside
Good internationalization (~25 languages supported)
Selective download of files in a torrent
Media File previewing while downloading
Torrent trackers edition and prioritizing
Seeders / Leechers displayed in download list
Styles support
Files prioritizing in a torrent
Torrent download in correct order
System tray integration
Tracker authentication support
Unicode support
Torrent downloading directly from their url
Connection though a proxy
IP Filtering similar to the one in eMule

Go ahead and try qBittorrent, you won't regret it!