I too am looking at this setup for a “5.1” Sound System in a spare room in my house. I think for what it is it will be a good system. Is it going to compare to a Rotel & B&W 800 Series System… No!
My Dealer told me that the Formation Firmware is really good. I think he used the term Rock Solid. It switches really well between Dedicated Source Components and Smart TV Apps. Not sure how the Firmware makes a difference as I personally feel that the TV’s Ability to route audio will make or break this.
He also told me that B&W opted for the Toslink connection due to stability. I guess they feel that there is less chance of connection issues if they stick with a Optical Connection. I don’t use HDMI Connections for Audio so I can’t comment on Audio Issues if any with an HDMI Connection. So that may just be a load of bull.
I think that for a Sound Bar System this will be a great 5.1 System… Pricey yes… Twice as much as a Sonos 5.1!
One drawback I can see for myself at least is that B&W does not seem to have a Speaker Stand for the Formation Flex Series. Duo Yes… Flex No. That really sucks if your are wanting a 5.1 setup!