Currently using braiins OS and their pool. Pretty straightforward flash of the OS to the SD card. I used etcher. Here's a pretty good tutorial.
Discussion
Yeah I used that video and the #cryptocloaks PDF. The recommended fans don't seem to be much quieter than the stock ones though. The miners I bought already had BraiinsOS, and I've used both #braiins and #Viabtc pools.
Yeah, I'm using the stock fans. I think startup of the unit is the loudest part. After that it's pretty good. I use the default settings for chip temps too.