I always play it twice, the subtle differences are what make all the awesomeness! Panned hard left/right.
If I’m feeling really adventurous I’ll quad track it and set the panning 100/80/80/100 but depending on what you’re playing, it can be a b*tch to get every take lined up perfectly and those subtle differences start becoming nasty issues. It definitely does the wall of guitars thing great, though!
This was quad tracked (there’s a chorus on an expression pedal I pop in and out, that‘s not the guitars being slightly out of tune, I actually used an Evertune for this because quad tracking + tuning…..eek)
I particular love the sound of pick slides or just sliding your hand down the strings between chords when 4 of them are going at once, or pinch harmonics when they’re lined up right.
Some people prefer tracking two different guitar tones, one on each side, but I get really OCD about it and even if it adds to the stereo imagine, I don’t dig having a different tone on each side. I’m getting around that with a dual amp preset with each amp panned hard left/right, for the double track I reverse the cabs so each amp ends up on each side. (Can’t remember how I had this preset dialed in in the clip, it’s a dual amp preset but can’t remember how I had them panned)