Very fun disc to throw. I bag a DuraFlex and a Glow DuraFlex driver, and when I need a relatively straight max distance shot, this is my go-to. If you don't have the arm speed, it will fade out almost immediately. If you can get it up to speed flat or on a slight hyzer, it'll have a nice clean S curve. On anny, it's fantastic for big distance turnover lines. However, if y ou can't get it up to speed, it will be apparent. Otherwise, one of the best understable distance drivers available. Once it takes some trees & gets a little beat in, I think it could be a great roller disc as well. Again, however, if you can't throw 12-13 speeds consistently, it's not great other than a utility disc that will fade quickly. 

I got 2 duraflex glow D Model USs. I tried them because duraflex glow D Model S is currently the longest disc in my bag topping out 480'-500' with solid s-flight. Right out of the box my D model USs were more stable than the D Model Ss. Released flat I get the same s-flight out of the US that I get out of the S with a slight hyzer release. Both discs are very comfortable and I have seen good consistency across the Ace line.