This dude I played with at Worlds was throwing the shit out of it. He basically had to revamp his whole bag, because he's from (high elevation) Oregon, and all his mountain discs didn't quite fly the same in KC.
He threw it in his bag just because we got 'em in the PP. He was throwing it 400 consistently, and that's not MBD. They feel great in my hand. Haven't thrown it yet though. The plastic kinda reminds me of those junk ass DiscWing Quarter K's that came out few years back.