There is more to it than just your amps, what's feeding them up the line along with cables.
Never mind your room and set-up.
There are going to be a allot of different opinions, just read above and mine, some threads making you think that a specific amp outperforms another.
This one had me chuckling;
(the Bryston 28B SST square 1,000 watt monoblocks), but he said that the sonics were not nearly as good as with the Lamm amps.)
In the end it's your set-up and you are going to be the one listening to it, it's not easy you will have to get different amps home to try. The problem with this, is will you be lucky enough to pair it up with the matching components up the line and cables and is everything well broken-in. You might get stronger bass but then lack elswhere.
Good luck to you it's the joys of this ever ending hobby of ours.
F.Y.I. I replaced CAT Sig. JL3 MK2 mono's which list for $40K with Bryston 28 Squared driving my MBL 101e's, also had the MBL 9011 and 9008 mono which are crazy money, Pass X600.5's and prefer the Bryston's. I do like the Bryston's paired up with a tube pre, mine being the VAC Sig. MK2a. About 10 Years ago now I also owned Revel's.
P.S. Lamm product is great also, have fun.