About the amps:
I use a Marshall JMP-1 and a El 84 20/20 Tube Power Amp.
The name sounds tiny, but it's got a sound that is by far more huge than that of 50 or 100 watt heads I've heard.
A friend of mine has got the same and told me that he pushed their other guitarist's Warp7 through the wall...at only half throttle.
The advantage about low wattage is that you get that power amp thickening factor in your sound at reasonable (that is still not room level) volume - if you need more volume you'll mike it anyway.
The preamp provides some versatilityalthough not as much as a TriAxis - but it's absolutely sufficient. I can also recommend the ADA MP-1, which our other guitarist uses. It's got more harmonics and less bottom and is a bit noisy, but a noise gate will help.
As for cabs: Don't f/"& around with those standard Marshall 1960s - their Celestion G12-T75 speakers absolutely suck! Hissy treble and fuzzy bass, and way too indifferent!
The 1960AC or BC with Vintage Greenbacks are great, although mono only. But my faves are Marshall 1960AV or BV cabs that are loaded with Vintage 30s which gives you brute mids and bottom for that "IF-Colony sound" ;-) - they are a bit louder than other cabs also...
As for guitars I use a Fender AmStdStrat, an Ibanez JPM 100 B and as my fave a Gibson Les Paul Standard.
DT use Rocktron Preamps (Chameleon/Prophesy) and Rocktron Velocity Power Amps. Forgive me but I think you can notice that those Power Amps are Solid State - they sound thin!
