What preamp pedals are you finding?
I was close to getting a BluGuitar Amp 1 Iridium but...
Before Christmas I found a great deal on a used ISP Theta Pro DSP Michael Sweet preamp/effects pedal. The cab sims work well enough and sound good to me (no IRs), but once I decided it's a keeper I got the ISP Stealth Pro power amp - small but not pedalboard small because of the power brick - that I run into either a Marshall 4x12 or Mesa 2x12. Sounds great, '80s in a box.
ISP has a Theta preamp pedal without the effects, with ridiculous levels of gain; but Michael Sweet hinted he's working on a new all-analog sig preamp pedal with ISP, looking forward to see what it is, should work great with my Stealth amp.