Flamestrike
Legend
At any rate, I find your idea of running "a few campaigns to 20th" a bit laughable. It takes a LONG time IME to get from 1st to 20th in any edition, several months to years in real time. Your pace must be greatly accelerated compared to what I am used to!
I've been playing weekly for 35 years since BECMI and AD&D, so have had my fair share of high level campaigns!