Don't have a suppressor...yet. But after hearing how quickly they're getting approved I'm closer to pulling the NFA trigger than I've ever been.
I'm really thinking about a Banish 22 suppressor because it's good up to 5.7x28 and every review I've seen says they're awesome. They also would be a fairly inexpensive way to get into the NFA game...though they're near the top of the price range for rimfire suppessors.
If I do get one I have several guns to use it on. One of them is the Kel-Tec CMR 30. I think that would be a great gun to suppress.