I think the best sparrers are (not in any particular order)
Lux
HP
Rec (rec recs my RECord lol)
Ozzy
5
Red
Charm
S.B
Vince (pwns noobs with mp40)
Wiz
Pest
Orestes
Eggroll (iAsian)
(Im sure theres a few i am forgetting as well so sorry if I forgot u =P...)