Well, I just picked up a nice 50w Ibanez(yeah I know) amp for christmas, and while I would've preferred a Marshall, it still works. However, I use a Yamaha DG-Stomp Preamp along with it, but my distortion sounds really hollow, and the clean sound doesn't have that deep, full, tone that I hear in songs such as Credence, and the live Opeth video guitar interview. I'm thinking about getting a Boss GT5 to help with the tone, but I don't have the money right now, so I'd was wondering if I could get some advice on whether I should pick up some new pickups(probably dimarzio) or a new distortion pedal. I'm leaning towards pickups, any tips?