I've been looking into getting a MBP in January and have been looking at notebook mice, but don't really know what's good and what isn't. I'd prefer to go without the little receiver that comes with most mice (bluetooth?) but from what I can tell it seems like thats kind of an expensive option, if so that's no big deal. My only wish is for it to have side buttons (I'm assuming scroll wheels are standard), and somewhat inexpensive ($30). Any thoughts?