These controllers were all working on SteamOS before as far as I know, so I’m interested to see what this changes. My understanding is that previously their controllers just show up as generic xbox controllers, and now they will be properly recognized. We’ll see if this has any other benefits like custom bindings for back buttons and things like that.
I’m personally a fan of the pro 2. I find it to be the most comfortable controller I own. Their QC does seem lacking for the hall effect sensor version though, I had to set up a small dead zone because it idled with a little bit of input. Still a smaller deadzone than a non hall effect, but I wanted to make note of it.