Sweet man glad you got a Spin.. I would list it as a must try from MVP just because it is their most understable disc. After throwing my proton one it made the bag quickly, seemed like about a quick 3 week break in period for me to get mine nicely understable.
My bag is Spin, P Envy, and soft E Envy so I think you will still have space for your proxy..
My bag is Spin, P Envy, and soft E Envy so I think you will still have space for your proxy..