Thanks Plutonium244! I've had/have 5 tube amps (including an SVT and 2 B15's) and played through a host of other over the past 50 years or so as well as 8 SS amps of my own. So I guess you could say I've got a bit of experience with them.

I've got a One10 and I've been thinking of a smaller light-er tube head to use with it for quiet gigs etc. It sounds like the EQ problem you had is room-dependent and I've certainly run into my share of those. Good to know about the fit of the feet. I was wondering about that.
You've got far more all-tube experience than me. Come to think of it, I have only 2 completely SS amps, the others (besides my 2 all-tubes) are hybrid. I am also a relative newcomer to playing, having only been at it for about 35 years or so

. God willing, I'll hit the half-century mark eventually; it's too late to give up now!
I use the PF-50T and a Super Bassman 300, and my favorite rig when the gig permits is the SB + Four10 (tubes + BF 10's = awesome). PF-50T is for smaller gigs where I still want tubes and don't mind the extra 15 pounds for the 50T vs micro/class D SS amp, sounds like more or less your intended use also. The 50T can get pretty loud and would suit all but the largest gigs IMO; I've used it in a pretty big room satisfactorily.
Agree that my only unsuccessful application of the amp was room-driven; but I WAS able to dial out those frequencies in that room fairly effectively with a good ol' MB200 (it's a smallish room). In my limited experience w/ all-tube, you just get more cut/boost control with a SS power section; though you generally get
enough cut/boost control with all-tube. Nevertheless, all things being equal, I prefer the 50T over SS class D, in most situations. Still, the convenience of a 3 pound MB200 in the gig bag does sometimes win out for small gigs.
OK, sorry for the amp-specific derail... but yeah, 50T + One10 works great.
As far as Jx's remarks about orientation of the One10, there are a few here who really prefer that side orientation, with the port to the side instead of down; monsterthompson comes to mind as well. I prefer a down-firing port orientation; plenty of room to dial in extra bass with EQ if I feel like it's needed to add a little heft, but side-fire seems to me to make the sound a little bit less distinct and less tight-sounding, a bit more woofy. But, it's obviously all personal preference and how it interacts with the rest of your gear.
ahc, what's your preference with the One10 orientation? Just curious.