B&W 802d - Power, Help/ Opinion please


I have B&W 802D, i need better amps, Im going second hand. I am as of right now tossing up between Bryston 7b ST's ($3800 for pair year 2000ish or a Mark Levinson 432 (5.5K) Please do advise as I have no idea i haven't seen or heard either.
By all means pros & cons for the prices listed. what do you think. cheers.
ellrotts
Pass labs was suggested to me, i don't know anything about them. What do you like about PLabs?
IMO your on the right track,first time ive actually heard suggestions of amps that would help in what your speakers lack.Detail and speed come to mind.I would never match Mac,Classe or similiar amps as again IMO it just makes a bad thing worse.Although I havent heard the Pass with the 802ds in quite awhile I would go that direction along with maybe the Levinson.Amps that have speed,detail,better imaging etc..just my opinion.