Looking for a distortion pedal/preamp that I can run into a power amp. Been using a little practice amp since the big amp stays at the practice spot, but I'm looking for an upgrade in tone for my practice rig. I use a 6505 normally, so I'm looking for something that can at least passable high gain sound. Currently debating between the MXR 5150 or the AMT P1/P2. I'd like to spend less than $200 and have no issues buying used gear. Thanks for any suggestions.