Sonus faber choices - help me decide

You got really lucky with Vs but until you upgrade your electronics and I mean all of it, you will only get about 20% of what the speakers are capable of.

I would have said the Amatis. 

Choose what sounds best to your ears.

Then start planning for an amp upgrade.

Curious- In which city are you shopping?

I’m in Columbus, Ohio. 

The amp is fine honestly to get you going and I would start by adding a two channel preamp. One with a home theater bypass would be simplest. If it does not have one you can just set the volume the same every time (12:00,3:00 etc) and use one of the inputs to pass through.

I have had several Rotel amps and still use one on my surrounds. I have done direct AB comparisons against Bench Mark ABH2 (I no longer own) and my current McIntosh MC462 and the Rotel is fine. It has plenty of power. They are a touch bright (no brighter than say Bryston) and a little cold/edgy in the upper mids in absolute terms but really start with the preamp or just get a good DAC if you just use digital music those surround processors suck the life out of music.

When I demoed the Nova III it was on the new Classe’ delta amp and matching preamp ($$$$) but it was pretty great.

Why in the world would you buy a $38,000 speaker and drive it with a Denon receiver?  Not bagging on Denon for what they do well at a price point, but come on!