I/we have four. An SS Bass head (can't recall model,) a RI Reverberocket 212, a vintage VT-40 (Lt. Bob and I have chatted about them quite a bit here,) and a mid-90's Jet J12T, same as one of the OPs. The Jet is here with me in Atlanta, the rest at studio101nola in New Orleans. I love the Jet- second-best brown sound I have played, and lately I got a ride-cymbal sound out of it when the reverb tank resonated with a few notes- kinda thing most of us hate, but I loved it this time. I wanted a distorted, knarly tone for "Amazing Grace," and the "cymbal" added to it.
I understand Dave Malone (of The Radiators) was surprised by the tone of the Reverberocket's tone, when he practiced at S101nola, recently. The bass head is in work-a-day service, and we are still waiting for someone to say "You got a VT-40??? I wanna rent that amp!?