Got some new jj6v6s yesterday for my main gigging amp. Been playing through it this morning while wife is running errands; no volume restrictions here They seem to be just what I wanted, punchy, articulate and more headroom. Had tried jjs 10 yrs ago and one tube went bad pretty quickly so got some EH instead. Lately I've been running old black glass sovteks, got a few sets in the parts bin. The sovteks have a nice smooth sound, but our last gig in November we added a new bass player, and found myself wishing for a bit more headroom. There have been a few threads lately on best 6v6, thought I would try jj again. If these jjs hold up they seem to be just the ticket.