The Roc and Roc 3 is a very popular disc with my buddies that I play with, but the disc just doesn't feel right to me, not enough rim to grasp. I use mostly Mako 3 and Buzzz, also like the SOL. Lately I have had the hankering for a MD3 but just haven't broken down to buy one yet. Have a feeling it would be quite similar to my Mako 3's.
Have you tried the Infinite Chariot?