It's really difficult to make these suggstions, but if you are on true mediums with clean backends, I think the IQ Tour Fusion would be ideal. Being a hybrid, it gets some push without being squirty, and it reacts powerfully off the spot without going sideways. For me, that's always been the beauty of hybrids. They give you the best of both worlds. I tend to like them when I need to start moving inside, but I still want some midlane read and a controllable move.
Now, if you want a ball that you can use all three games, you may want to go with the Optimus or the Primal. For me, the Fusion isn't as good when I want to go straighter because it finishes too hard through the deck, leaving 9-pins and such. If I want to go straighter, I tend to go with a pearl with a lower RG, something that starts up sooner and is smoother through the pins. My Lucid is excellent for that. I imagine the Optimus would be as well.
