Hi ! I'm about to buy a powerful amp for gigs but i don't know which one to choose between the Aguilar hybrid DB 750 (i've heard very good things about it), the mesa M-pulse 600 that i tried and really liked, and the GK 2100 RB (i've tried the 700 rb and really liked it also). Can someone advise me please??? I have no pbs for money and i'm looking for a clear tone which does not alter the sound of my american spector. thanks !