I was in the market for a high gain amp a few months ago... after going to every single music shop that I had access to, I ended up with on Orange TH30 and never once looked back. This amp nails basically every single tone I've had in my head... I don't think there's one setting on that shape knob that isn't useable for something awesome.
Just looking at your signature... Where did you get the EMG JH's from?
And to the OP have you looked into clones of the SLO.
I will agree that they do have a fair amount of upper mids but the mid control is very sensitive and you can just change it.
I would not describe them as ice picky at all and they do tick all the other boxes that you want.
It works out cheaper than buying most production amps to do it this way and the result is almost identical!
If you search i have a few threads regarding it on here.
And hopefully tomorrow i should be getting hold of a real SLO100 to do some A/B clips.
Depending on what options you want you can build one of these for a really small amount.