i'll be in the market for a new/used head in the next few months and i would like a tube head. i would ultimately like a marshall vba, but am open to other suggestions. obviously i'm aware of the ampeg heads, but what models for some other companies should i look at? new, used, old...i'm just not aware of that many tube heads for amp companies. any suggestions? i use a fender aerodyne jazz bass and want to make an ungodly amount us noise thru means of heavy distortion/fuzz all the time.