I've been using Kooha, but it's painful in a few ways, not least of which having aggressive compression that can't be disabled. SSR was nice because of the reduced time between "decide to record" to "draw a rectangle, done." OBS works, but is very clunky and cumbersome to reconfigure.

At some point I'll get irritated enough to seek out more alternatives and give them a whirl. Such is fate :)