The Esp Flx plastic is absolutely amazing in the winter, when my other discs are stiff as a board and not holding up to their flight numbers the flx discs come through. Just had one of my best rounds at my local course using only 3 esp flx discs and my putters of course. The heat was super consistent and did a great job of holding an anny line for the majority of its flight with a light fade at the end, exactly what I needed for baskets off to the right, when thrown on a slight hyzer it flipped to flat and held straight down the tunnel shots. Already purchased a second one. They will likely be my main driver for wooded holes going forward. Oh and because of the flex these discs are essentially indestructible, hammering into a tree right off the pad from a grip lock at full power did zero damage.