Big Pigtronix dude here (own or have owned almost everything they've put out) and the Class A Boost is a super underrated pedal in my opinion. I've only ever used the original model (the full sized white one that has a sort of tuxedo graphic on it) but I love it
My favorite thing about it is how it can sort of "Vox-ify" any amp - gets a real nice sparkly jangle