I have been most pleased with the Bel Cantos. They have just the combination of finesse, muscle, detail, control and efficiency that I need to run my OHM speakers optimally. And not a trace of fatigue even as the volume gets cranked up to realistic levels. They also mate well with teh tube pre-amp, something not all SS amps do. A home run for sure.
The ARC pre-amp has also been a hit and hard to fault. There is nothing glaring to not like. It is clean, detailed dynamic and smooth plus amazingly neutral sounding for tube gear, which I like.
I had considered ARC SS amps when looking but decided to go with the BCs and give a well received Class D icePower design a try.