Ironically, the only place I can find the AVAA C214 is proaudiola and they only show them in a bundle of four ($15,800). I sent a text to proaudiola to see if they would sell singles, and since they are near me if I could test one in my room.
I also reached out to the Cable Company, thanks Paul172, to see if I could get a Black Box from their loaner library.
Based on the review of the SR Black Box that luca.p just started I’m leaning towards saving a couple thousand bucks, but it would be nice to hear both in my room before making a decision.