I'd have to say that the worst USPCC deck I've ever had was, unfortunately, my Bicycle Guardians deck. I love the design, the idea, and the look, but mine didn't have that glide effect for very long. They started clumping a week after I got them, even though I had barely been handling them and always cleaned up before using them. It disappointed me because I had read great reviews for this deck and I had high expectations for it. Also, mine had that curve thing going on, so I could never fan them or spread them well. Really disappointing.