Thank you! This is very helpful! We are doing mostly 1-on-1 calls, so I'm considering if peered connections would be better. They're certainly cheaper. I hadn't considering simulcasting multiple quality streams. That's something to think about.
By "doubling connection count" I mean CLIENT <-> SFU <-> CLIENT is twice as many as CLIENT <-> CLIENT.
Some do peer to peer for 1:1, then upgrade to actually using the SFU for more participants. But that's a challenge on its own, so when more than 1:1 is expected, you might just prefer to use SFU from the start, and save the hassle for when to switch between those two models
By "doubling connection count" I mean CLIENT <-> SFU <-> CLIENT is twice as many as CLIENT <-> CLIENT.