For me the Ashdown RM wins out here as I found it to have more - dare I say the H word - heft to the sound than any of the other class D amps I tried (Markbass, Tonehammer, TC RH, GK MB).
Edit - forgot to mention as well that being UK based should the amp develop any unlikely issues it’s easy to get it dealt with, Ashdown being a great company to deal with.