I would get one and join a pool

I think it largly depends upon your electric rate. IMHO the sats will eventually always be worth it, and If you have a need for some heat then it's an absolute slam dunk.

I have an S9 running as a space heater. It's a lot quieter after upgrading the fans, but that's an additional expense. The PSU fan is the loudest, and cheaper to replace. I use the Braiins firmware which allows me to set a target wattage. They run a little more efficiently at a lower wattage too. I...