It fly well, the K1 plastic is very good in hand and durable. But fly number don't match for me. As i got a Lots (with accurate fly numbers), what i like a lot, the Falk is almost as overstable when i search for an understable driver. Still searching for another model.
I've found this to be a great utility disc that will never leave my bag. It literally can do it all, hyzer-flip, hold an anhyzer or hyzer line, or if you need it to go straight. Definitely recommend.