I have a Logitech MX-500 mouse which I like very much and it performs perfectly in everyday applications and games. However, I don't really like the ergonomics as I don't feel very comfortable holding it so often I feel slight pain in my hand after long periods of use. Seeing as most MX mice have the same shape and the MX1000 is too expensive to me, I was thinking about the MS Wireless Intellimouse Explorer 2.0. Supposedly, it has much better ergonomics than Logitech however there is a couple of things I’m worried about. I love the feel of the “short travel” main buttons on the Logitech. Are the main buttons on the Microsoft different? Also, how much of a difference am I going to notice going from a corded MX-500 to a cordless Explorer 2.0? I'm just a casual gamer so I don't really mind if it's slightly worse for games but is the difference in precision going to be noticeable? How bad is the lag? I don't really need a wireless mouse but I thought it would be nice. Or should I just get a corded Explorer? What do you guys think? Thanks.