Hey guys. Im using the speedport blacks and like both string hole inserts for te feel and the port inserts for power! Basically, I want the feel thats in the middle! Have you ever mixed the insert for this, maybe ports in the sides and holes in the top? Also I use poly strings, but have liked champs choice in past rackets, any recomendations? I like the feel on volleys with the hole inserts, just to pingy, but the ports are too dead! Hope you can help!