I need to get a mouse that provides the ability to at least emulate a middle mouse button (for a CAD software I use). Back in the day I used a Mighty Mouse for this. The little ball was depressible and clicked, so worked as a third button. I'd prefer to get something new now though. The Magic Mouse does not seem to provide this functionality. Anyone have advice on mice that are nice and provide this functionality well? The Logitechs are all so gamery in their appearance. Would really like to try to find something that was at least a bit more similar to my iMac and Apple keyboard.