I have Xaoc Kamieniec Phase Rotator, it sounds similar to the various Phaser VSTs I have, but of course is in eurorack. With rate and depth up, IMO it sounds rather similar to other phasers. With rate to minimum, I hear it as giving a static boost to whatever frequency you've set on the big dial, plus that kind of rubbery acid-y sound phasers make. I like that type of setting for a "quick acid" treatment to any sound I would want to apply. I like the unit, but in retrospect, consider it a bit expensive for what it is.

Wasp filter is one I will likely get at some point (if I wasn't already well stocked on filters). It gets so much praise and is a good deal.