Funny, I am the opposite. I have been a Kemper user for years for recording, but never live. Always an amp guy. Then the TMP came out, and I jumped on it. I gigged with it for a bit but it was never quite 'it'. I've always felt the fx were lacking, and natural sounding low gain amps weren't really there for me. I'm not a 6l6 guy. So for giggles I bought a Kemper Stage. I had never explored the kemper's fx because my method is guitar into pro tools, fx after unless it was something very specific. What I quickly discovered was how much better the kemper's fx are, esp reverb, delay and chorus/modulations. Pitch shift as well. Both have really good od pedals, though I confess i prefer the kemper method of everyting on a continuum rather than choosing a 'new' pedal. So I started building live performances, primarily using Britt's stuff. After a few gigs it was clear to me, and my bandmates, that the Kemper just worked better. We are a pro level cover band that plays the gamut in tenor and style and we all felt it sounded better, particularly straight into the pa. It requires far less 'tweaking'.What made you switch from Kemper (I think that's what you were using and seeing the Kemper for sale )
This isn't to say you can't get a good sound with the TMP. You absolutely can get brilliant sounds. But I do think, for me, and maybe others, the brilliance of its interface overshadows some areas is which it still has upside. There is something to be said for how easy it is to sit in front of it and create. It's incredibly fun. The kemper interface is awful. BUT....I actually think the Kemper's computer based interface is superior to the tmp. Much easier to audition amps and see all the parameters at once.
I'm not selling the tmp yet as I do hope future updates bring it closer to what suits me because I do love the skeumorphics and the easy to read display. Oh, and the FR12 is just fantastic. I'll never get rid of that.