Anyone have any experience with these? I am picking up a used Mesa 4x10 cab, and I need a head.. Because of the discount I get on Fender and Traynor, I am trying to decide between the rumble 350 or the Dynabass 400H head. Unless they both suck in which case I will search elsewhere. Being a guitarist all my life, I really don't know much about bass amps. I know I love Fender guitar amps (well, some of them).