ckay ARC > beam. I have the arc and ones set up as surround. Also have a few others through out the house. I do not have a sub but I’m sure there is a thumb benefit for it for sure. I bought my dad the beam with a couple ones. It sounds good but you can tell the difference between mine and his IMO. Plus if you are hanging your TV, the arc looks so sleek under it.
For me anything you do with Sonos you can’t go wrong. They are so simple to control, so simple to set up, so simple to link up together and it’s a great premium sound at a fairly affordable price. If you are a Costco member, they have a little lower price I believe for a two pack or the ones.
I honestly can’t speak highly enough of Sonos.