In my limited experience, the tonemasters are on the same level (if not a touch ahead?) sonically. But the Kemper/Fractal stuff is infinitely more flexible as far sound palette goes, although the trade off is that the tonemaster looks, feels, and behaves like a Fender blackface amp, and the Kemper/Fractal looks and feels like piece of overly sophisticated HVAC equipment crossed with a high end rice cooker. A time traveler from the 60s could easily operate a tonemaster. I actually just picked up a Strymon Iridium that I’m considering replacing my TMTR with. Obviously I’m not playing out with people and probably won’t be for a long time, and 97% of my music time is using the DI out of the TMTR (which rules already, and I’m very curious about the new firmware!) so I’m gonna give the little guy a shot.