I like them all ;) I think that all of the amp sims should be run at 18v. It gives them much more of an amp like feel.
My carvin legacy build didn't work. Not 100% sure why, tho. I may try to rebuild it at some point.
Jcm800 is great for those classic 80s tones (18v is a must!)
The slo 100 was ok. I Dunno, I think I was expecting more but was a bit let down.
Dr. Boogey is always a winner! Especially at 18v!
Diefet is thicker than the Dr boogie and the deep control is great! More bottom end thump and more saturation.
Seventheaven is another fave. Lots of flexibility in that one.
Mark iic+ from sabro's site is pretty good, but I don't think that I would build it again.
I have the parts in for the uberschall build. Maybe sometime in the next few weeks when I have time. I had that uchi mata board and enclosure done for months before I had time tonight to put it all together.
I'm starting to wonder how some of these might sound at 24v or more...
I am also thinking about putting one or two of these into a 1u rack enclosure and use a remote footswitch to go between "channels" like the diefet and some kind of fender or vox type sim for the clean channel, but I don't know where to get the rack components at a reasonable price....