Lil sluggo, I use the Bryston 4Bst in my system and it has everything that you are asking for..lots of punch, dynamics, and control, with great lowend. The Marsh or Mac might be a good choice also, but I cant comment on their sound,(never auditioned them). The post before mine mentioned that he and his freind preferred the Mac MC7200 over the 4B. Both of these amps were produced in the early 90's; with the 4Bst debut in the late 90's. The two Brystons are different sounding amps. You can find a used 4Bst for $1000-1300, and the remaining 20 year warranty from its manufacturing date is transferable.
What ever amp you do decide on, you should keep a open mind about using a different companys preamp if you have the choice. I had a demo Bryston Bp-25 to try for a weekend a few years ago; it sounded nice , but the tubed preamp that I had at the time,created a warmth that the Bryston lacked. I have used 4 different preamps with the 4Bst and stopped at the Cary Slp 98. The Cary- Bryston combo sounds fantastic...IMHO. Good luck with your decisions.
