Kr Audio Kronzilla vs Atma-sphere MA1?

Has anyone ever compared any of the Kronzilla amps (stereo or mono blocks) against the Atma-spheres?

They both look like all out designs.

Just a few of my thoughts on each:

Pro's of the Kronzilla: Build quality of the tubes. It seems like this could contribute very heavily to excellent sonics.

Cons: solid state input section. Maybe it helps sonics, maybe it makes it sound more similar to a SS amp?

Atma-sphere: Pros: OTL - which if compatible with your speakers

can remove several layers of veiling (and Zero box can be used if necessary)

Atma is a very known and respected company in the US , good resale value, updates available etc.

Weight: The Atma's dont weigh alot since they have no transformer. MAybe not an issue for some, but to me it is.

Balanced in as well as single ended-

Cons: Heat - the Atma's use alot of tubes - and I would imagine generate more heat than the 2 tube Kronzilla's????

(though you can remove tubes from the Atma's for warm weather use and get less heat and power - a big plus as well)

Comments from anyone who has compared these 2 excellent amps?