if im right theres this stunt you can use with high gain....
im not sure how its done, but is it like striking a note or chord or whatever and letting it ring in front the amp at the pickup area to get a screaming effect?
feedback they call it, hmm wanna know tho, you guys run the amp's drive with the addition of pedals or just the amps drive? haha my amp is always on clean and is driven by my pedal whos gain stands at 3 oclock
well i do sometimes kick in the distortion from my pedals (ds-1, jimi hendrix fuzz..) with the overdrive from the amp, but not that often cuz too much feedback isnt good either...
the best tho, would be combining the right amount of overdrive with your pedal distortion....cuz it somehow "smoothens" the tone..
For me, depends... When it comes to metal, its max. hard rock, 8/10. Softer stuff... I reduce here and there... No current favourite gain setting but my treble and bass are always to maximum.