Thiel 7.2 or Revel Studios

Revel Studios are more musical to my ears. Thiel has always been a bit grating on my ears. FWIW.

Two clear, detailed, good imaging, well balance sounding speakers that are very musical sounding. I've sold Thiels for years, and have experience with the Revels somewhat, and heard at shows and clients homes as well.
Both probably do best with slighly different gear selection choices from what I recollect. But that goes with anything.
I think you should try whichever is more accessable and or apractical for you(unless you like the looks of one over the other).
If you like the sound, then stick with em. But make no mistake, you can get good balance out of either with careful gear selection.
To me, these are both the typical "high end sounding" audiphile speakers these days...pretty, clear, detailed.(like Wilson's, Talon's, Maggies, Joseph's,Apogee's, etc)

Keep 1 fact in mind: Revels take hundreds of hours to break in. Have a lot of patience if they don't sound as good at home as the demo's in the store.

I agree will all of the above. One other consideration is your room. Thiels like very wide spacing, with ample distance to side walls, pointing straight ahead. Revel is a little less picky on placement, but if you get the Thiels dialed in, I think they have the edge.

I believe the Studios are slightly better. IMHO.
(Since I own them, they must be the best, right?!)
However, the Theils are also quality speakers.
I doubt you would go wrong with either one.
I don't think it takes hundreds of hours to break in the Revels though. Maybe a hundred hours or so. They sound pretty good straight out of the box, but I will agree that they do sound better the more they break in.
The Revels should sound good with your Krell amp. I use a Mark Levinson myself.

Good Luck in your search.