BT is pretty good, but i use DC since it's more useful on the local network. Both protocols usually max my speed(1250kbps outside the network, 12500kbps inside).
Oh, and Hollywood/RIIA/whatever: Good luck. You'll need it.
ya ive been using BT for over a year, i love it. As for them breaking it or really figuring out who we are forget it, by that time it will have evolved yet again.