I really enjoy Nas as a live performer. He doesn't have the most uptempo, get-up-out-your-seats music, but he adds alot of energy IMO.
No one can top DMX though!
DMX keeps it Hype even when hes drugged up, seen him in Atlantic City few months ago at an old school show
Despite the Hate he gets on this site Busta Ryhmes use to put on a hell of a show, dont know what he's like now
Puffy use to put money into his stage shows back when him and badboy use to tour
Nas seems to have gotten much better then in past
Jay Z from what I hear has gotten better for the amount he charges when he comes to my state he should be GREAT
50 - Was dope in the club during his rise but was kind of terrible as far as stage performance's go when I saw him around the Massacre era just kind of stood there and bopped from side to side with Yayo yelling but they did bring out Guest

Olivia, Ma$e and Mobb Deep came out now that I think about it
Wu - Tang - I heard great reviews from there recent events horror stories from the past performances
Young Jeezy - Was ok when I seen him he had just lost weight around the time and was extra amped
Lil Wayne - Saw him when the dedication 2 dropped, he was ok but the venue was hot as fukk ac wasnt working or some shyt nikkas kept throwing water so Wayne goes "if somebody else throw water on the stage I'm out" So you know what happen...... nikkas threw water on the stage he leaves stage fights break out