Pros: Hands down best ergo gaming mouse. It absolutely makes me game better.

Cons: Delicate. I already went through the rma PROCESS and my second mmo7 has signs of failure. I'd bought one for my wife before my first failed and within 5 months, her's had the same thumb-side button problems. It's in a box to be sent back now.

Overall Review: I love the overall design but it's simply not sturdy enough. Very disappointing.