I set my torrent client to 40kbps up and have no problem downloading at high speeds. Usually get anything between 200 and 600 down. In reality though, you are never gonna max out your download on BitTorrent.
With a high speed connection, like 10Mb, you need to find better sources for your downloading requirements than BitTorrent IMHO.
That's my two penneth's worth on the subject.
