Stereo or Mono, it does not matter other than it is easier to physically move the mono amps And the mono amps can be placed nearer the speakers. I am the owner of Quicksilver, PrimaLuna(stereo/mono) and Bedini(stereo) amps. Some amps are only available in mono or stereo. Just listen to the amps. Then choose!
Stereo or monoblocks
I recently bought a pair of the JBL HDI-3800 speakers. I also own a McIntosh C-2300 preamp. Should I buy a used McIntosh mc402 stereo power amp or try to find a pair of a different brands monoblocks? The new Schiit Tyr has my interest.