Wouldn't mind trying a cab with a c90 on one side and a v30 on the other
I tried that with a Tremoverb combo about 7-8 years ago. I thought it'd sound great, but wound up returning it to stock with 2 V30s. I love the Mesa C90 in pairs or in a 112, but paired with V30s, something seemed off. YMMV.
Great setup, though, Bob, and yours sounds cool, too, Egads!
My current rig is pretty simple, as you probably know. Depending on the needs of the project, I play either an SC58, A-V or Sig Ltd into the HX/DA. I can bypass my pedal board completely with a switchbox, or run into a Clyde Deluxe, Fulltone '69, Deja Vibe, and/or TC Nova delay as necessary. I do most things bypassing the board, but every project is different. I mean, really different! LOL From the amp, the sound goes to a Mesa Recto 212 like Bob's.
Fortunately, the amp can handle just about any need, and when it can't (so far this hasn't happened), I can either borrow or rent something from another studio, or use modelers. But the HXDA is "my" sound to a degree I've never felt before, even with my very nicest amps, so I'm pretty darn happy!
The '69 pedal is great for truly authentic late 60s tones, but the amp is capable of so much more than classic rock or Allman/Jimi tones that it constantly amazes me.
In general I'm using the Artist V as my basic rock guitar, and for cool and interesting textures as well; the SC58 is great for when I want heavier, darker or even jazzy/bluesy tones, and I'm discovering that I like the Sig for the bright, chimey stuff, either split or not. I really feel this is an ideal setup.
Finally, because it is, after all, a working recording rig, I tend to use a Royer 121 into a Focusrite ISA preamp, sometimes with an Audix i5 or SM57 added for a blend. The Focusrite blue preamps have switchable impedance, which is important for a ribbon mic that likes to see around 1500 ohms or more. I like to run the 57 into a tube UA 610 or equivalent, or an API preamp, again, depending on how aggressive I want the track to sound.
As for software and processors, I have some secret guitar weapons.