I have a Logitech MouseMan+ on one of my PCs and it's a fine mouse indeed. But you have a point about the wheel; always feels strange to press it like a middle button. Truth is, I like the wheel more.

As regards MS mice, I used to use a 200 dpi serial soap-bar shaped MS mouse. Very nice. This was when 400dpi mice first appeared and everyone started mousing at ridiculously high sensitivities. I eventually wore it out.

Wade.