Yea, too much gain can surely be an issue. The main Marshall sounds I tend to gravitate toward are early AC/DC. And it's easy here to get brightness and gain muxed up. For this sort of sound, I like to be able to get clean when playing gentler and really crunchy when digging in hard. I do like a little spring reverb for blues playing, but just enough to kind of fill in the complete silence gap between phrases. But I'm fine playing a Marshall style amp without it, not so much a Fender blackface amp.