I used to have an Adcom 545 and a B&K 200.5 multi-channel. The Adcom was a very early amp and I ended up not being impressed with it at all. It was okay, but it was warm sounding and very dirty (not clean at all).
The B&K had tons of current and sounded great. They had great slam, power and impact! I think it’s significantly better than the Adcom, but after a few years I felt it was still too warm for me. If you like the warm sonic signature, the B&K is a great option.
If you want something faster and cleaner, the Emotiva amps are an option, but they will be bright/harsh unless you upgrade the fuses to something like an Isoclean. The Isoclean is a warm fuse that tames the harshness of the Emotiva.
Parasound is a good choice. If you can swing for a Parasound A23, do it. They are expensive, but worth it.