I have a X5 in 400 plastic 174grams. It’s my go to disc for uphill shots. I am a beginner with okay arm speed. The disc wants to glide. I have thrown this disc over 450’ once and over 400’ multiple times but never with good accuracy. My local has 4 holes that are uphill and the X5 outdrives my Nuke, Destroyer and DDX every time.