here's a few:

www.hosthead.com i have hosted there for several months and am very happy. these servers are semi managed, but they do everything i've required and they've done it fast.

http://www.idealbandwidth.com/ basement uses these guys. they have been pretty steady for a while now.

http://www.exmasters.com/dedicatedus.php several guys strongly recommended them to me.

http://www.sagonet.com/ viking on awi and others use them and are very happy with them. i don't think they are managed, though - but you can ask.

btw, i hosted for a month with luke. he was courteous and very helpful - and patient, too.