Thanks everybody for your comments and passion to class D amps, a challenging alternative way of sound reproduction.
Analyzing your suggestions, if i am not mistaken, Jeff Rowland Model 125 is ICE Powered. Since I already had an ICE Powered amp, this might not be an attractive option for me (given that this amp not cheap, perhaps just good-looking).
Peachtree GAN 400 can be an interesting choice. I have emailed them a few days ago, did not get an answer (not a nice way to "answer" questions). Then i called them. They say that they do not ship outside US or something similar (a bit inflexible answer, i would say). Orchard Audio GaN mono blocks is an alternative (also less expensive) option . I just emailed them.
As to Rogue Hydra and Dragon amps, Hydra's power would be fine for me unless Dragon sounds different. Somebody mentioned AGD Audion monoblocks. Both, Rogue and ADG are hybrid, AGD is about twice more expensive and twice or more times lighter, do they sound better?
Honestly, I am not too convinced with an idea to combine tubes with SS in one unit. If I want tubes, I go and listen to my tube amps.
My homework turns out to be not easy - I may end up with buying nothing.
Anyways, your further inputs and highly appreciated!