Dunno if this has been posted yet, but all the popular "green box" Tubescreamers except the Green Rhino get lined up for a shootout in this vid: https://www.youtube.com/watch?v=P9VmGZioAMU. He tries them all at roughly 12-o-clock gain/drive levels, then at edge of breakup, then dimed. The lineup includes:
Route 808
Maxon OD808
Hardwire CM-2 <-- My personal fave and on my own board
Bad Monkey
Ibanez TS-9
Nobels ODR-1 (not a Tubescreamer circuit, BTW, but it comes in a green box so they threw it in)