Need insight on these amps

Like all things audio, I would make sure that you can audition these amps before you buy. As a former owner of a Krell amp and you notice I said former, I was very underwhelmed with it. Power yes, music, nope. I also use to be a huge fan of ARC stuff but not since the early 2000s have I been anywhere near ARC gear as (to me) the musicality went away; no involvement or "drawing you into the music" anymore. If you are going to stay with solid state amps, then I would recommend that you get something from BAT. For me, BAT amps sound like music. I had a huge VK-500 that was marvelous and I was sorry to see it go but at 108 pounds it was just too large and I had no need for it anymore though it was nice to have around. It would drive anything.
Like everything audio, one man's meat is another man's poison. I am not a solid state guy  so I am limited as to what I can recommend in that arena other than the BAT amps I had and the former Krell and ARC things.  I cannot say enough that be sure you try before you buy!

Hi audiogabby,
The VK-500 I had was opted out to the max as well. The difference between the 200 and 500 was extraordinary but so was the price. And yes, my 500 came from the early 2000s and I have to wonder if Viktor's stuff is still the same. I certainly understand about the ability not to be able to demo. It seems with the advent of the internet there is a lot of gear for sale but not much ability to "try before you buy". What type of load does the speaker you wish to buy present? The reason I had the Krell was to drive a pair of Apogee Stages way back in the day. Interesting story is that I actually drove the Stages with some tube amps. Jason Bloom the former owner of Apogee learned of this and he actually called me to tell me it could not be done. I played for him over the phone the amps playing the speakers (no Youtube or text messaging in those days) and he was astonished. He had promised to see this the next time he was in Seattle but sadly he passed before that happened. The reason for the story is this: some tube amps can drive some difficult loads; it is just not all that common but possible just in case you want to stay or go with tubes. Another choice might be some older McCormack amps, the DNA series. I used a pair of their monoblocks once and while not in the same league as the BAT or my large tube amps, they were pretty good once Steve "hot-rodded" them.
Thanks for the patience with my long answer.