For some reason I have a strong dislike for Marshall amps, although I have been a metal fan since the dawn of time, and there was hardly any band in the 70s/80s that didn't use these amps. However, I think no matter what you play on them it always sounds like AC/DC. If it's about guitar amps, I would always go for Hughes & Kettner, if I have enough money it could even be Mesa Boogie (like Slayer had on Reign In Blood). For my sweet bass guitar I usually go for Trace Elliot amps. But my bass sound is unusual anyway, it's like a heavy, deep guitar - no twat-funky slapping, but lots of overdrive/distortion, chorus, delay - a sound that can only be compared to a swarm of angry hornets.
REHAB IS FOR QUITTERS