Benchmark or McIntosh....

Brain says two Benchmark ABH2 as monoblocks. Heart says Mc because meters and more power. A little background info:

Mixed-use theater/listening room. More listening versus movies. Primary source is a Hifi Rose RS150B into an Anthem AVM 70 pre/pro. Current amplifier is a Wadia A315 at 150x2. Speakers are NHT M6 monitors (a 6 ohm/ 250w sealed speaker, which is exceedingly rare and why I still have them.) I have seven 21" subwoofers so it is fairly equivalent to a live concert when everything is fired up but I need a little more oomph from the monitors.

I was set on a pair ABH2s earlier this week, but I keep getting drawn back to McIntosh - primarily monos MC601 MC611 MC1201 etc...

Do I pick Mc with more power (will probably be a second-hand model due to availability/wait times/budget etc) or so I go for the Benchmark with superior SNR (pre/pro is 110db and Hifi Rose is 117db)

TIA for any real-world feedback!