You will not be disappointed in the MPX. Target acquisition is about as fast as it gets. Good accuracy for a sub gun. Very Ambidextrous, I'm a left eye dominant lefty shooter, and the features are much appreciated. I think I might have 800 rounds through it, no problems. I have mine with the folding brace and it fits in a LA Police Gear diaper bag with no issues, and is extremely quick to deploy once you figure out the brace(pressure has to be applied perfect, but becomes second nature). I run a SD3G trigger in mine, and haven't had any issues even though I have heard others have. If the trigger gets messed up I'll just put a new one in it, worth every penny. Glad I didn't SBR it, glad for the new ATF letter out muahaha.
EDIT: And Yes, it is super sexy. Everyone who has fingered or shot mine has drooled over it.