I'd probably go Diezel Herbert again. I got on with the amp originally and wouldn't mind giving it another go. Or maybe a Quick Rod. First QR I had was amazing, lost that amp in a rehearsal fire. Got another QR expecting the same and it was just way off. Not sure what happened there.
That said I tend to lean towards amps that were mainstays at one time and I moved on not because I didn't like them but I just don't keep alot of amps around. I'm a one amp guy, I get my sound and that's it until something makes me change. And it's generally the run of the mill stuff like a JSX, OG 5150 or even the reissue that I'd like to have again just to have.
Most of the boutique stuff I've gone through, no regrets on letting them go.