I got my Reko today, and took it to the course. It feels similar to a Prodigy PA-4, but with a more rounded edge, and comfortable. The plastic is not quite as stiff as Classic Hard/Zero Pure (Trilogy), but was firm enough and felt good.
I made a few test throws with it off the tee. Conditions were calm (little to no wind). The Reko got decent distance and did not turn over on me. On approaches, I threw the Reko only a couple of times, but it flew consistently. I used the Reko most for in-the-circle putting. It did fairly well, but seemed to drift a little right... that may just have been me not being used to it, and with time and practice I could see the Reko becoming a good, consistent putter.
The Reko is good, but I'll be straight up candid about it: it's not "wow!" or exceptional for me. I'm not trying to disparage the disc, but it doesn't separate itself from other putters I've tried. But it *is* good, so those who like Kastaplast discs will very likely be happy with the Reko.