Mighty mouse (I owned one): ball that stopped working instantly when you used it and the only way to get it clean involved destroying the mouse.
Pro mouse (I owned one): cable frayed after no less than two weeks.
Apple USB puck mouse: just totally unusable pile of crap unfit for human use.
I decided to go for the innovative option in the end: the Microsoft £10 optical mouse. Works much better than anything Apple have ever thrown out.