Woah woah woah.
I had a Razer Naga Hex, the left click crapped out (cookie clicker), but I couldn't find a decent replacement (the Trinity is more expensive at $100, and worse). MMO mice are no good because I'd mash the middle button by accident.
But I just checked the EVGA x15, and the mid spot is clear! This thing did not show up in my searches. Why the hell not!?
Edit: Oh, hold on, it looks like there are issues. Scroll wheel, some other things.