I have a pair of Bricasti M28 amps in my system. They replaced JRDG monoblocks which had separate power supplies. Compared with the Rowlands, the Bricasti M28's are superior, especially in the mid to high frequency range. The highs are more open and appear less congested and restrained, more relaxed and detailed, just more natural.
The M28's are very conservatively rated and there are more powerful amplifiers, however, you would never know it. Monoblocks such as these give you a much lower noise floor given the left and right power supplies are isolated from each other. Response speed will never be a shortcoming with any amplification on this level. Room size is irrelevant then except for the floor space another amplifier occupies.
There is a current listing for Bricasti M28's on Audiogon for an a very reasonable asking price of $16,999.00 for the pair:
https://www.audiogon.com/listings/lis9bj33-bricasti-design-m28-monoblock-30k-retail-solid-stateHowever, you might check if these are the original or current version. There was an upgrade several years ago incorporating superior binding posts and Stillpoint footers.
I personally feel that given this level of quality and performance that even at the retail these are modestly priced and well worth it. In addition to the Rowlands, I previously owned Threshold and Plinius amplifiers.
See the outstanding review here:
https://parttimeaudiophile.com/2015/08/23/review-bricasti-m28/Here are some very nice show reports on Bricasti products:
https://www.avshowrooms.com/bricasti-design-company-showcase.htmli hope this helps!