If you want one that trumps it all, connects to just about every computer/device, can be wired or wireless, then check this one out:http://www.amazon.com/gp/product/B008QH1YPEhttp://kbtalkingusa.com
I believe they ran out of Blue and only has Red right now. But Red actually costs more. I have one with MX Red and love the linear smooth action. It's a preference issue though.