They are both overkill for any of the R series speakers! I have an H390 and it sounds great on my KEF Reference 5’s, The Hegel is $6k and the Mac is $8k. Why did you pick these to power $2.5k speakers?
The “rule of thumb” that I grew up with is the speakers should cost twice what your amp does. Obviously, nothing is cut in stone, but.
Oh and if you like the Hegel sound, you can get a used H190 for about $3k.
let us all know whatever you decide.