I've figured out some of it, but I'd really like to know the details.

We have:

VALVE1: ?
VALVE2: SVT?
CLASSIC: ?
SCOOPED: GK800RB?
LASTUDIO: an SWR of some sort?
GOLDPNL: an Eden of some sort?
JAZZ:?
STUDIO: Ampeg B-15
AC100: Vox AC-100
UKMAJOR: Marshall Major 200w Bass Head and Cab
SYNTH: whatever

Also, any info on the effects modeled to create the various overdrive
and distortion effects (such as Tubescreamer, Rat, Big Muff, Fuzz
Face or whatever)?

So far, I really like the UK Major. My amp is SWR, and while I like
it, I've been suspecting for a while that it may not be "my" sound.
Finally, does anyone have any comments as to the accuracy of any of
these models?

Thanks in advance for any help,
-David