The distortion I’ve used the most by far is my trusty orange Boss DS-1. I bought it because it was relatively inexpensive and Cobain used it. I run it into an edge-of-breakup Ampeg Reverberocket (50 watt 12AX7/6L6 212 combo), and it works great. I can hit the foot switch over to my dirty channel if I really want to go balls out. Works great