I see Apple seems to be halting production on their original single buttom Pro Mouse. Why is this? I've grown rather fond of it and prefer it to the clunky Mighty Mouse. I don't like how the Mighty Mouse required me to lift my left finger in order for it to register a right click. Anyone else find that to be a problem? I only used it briefly at CompUSA but left with a bad taste in my mouth. Anyone know where I can find the originals?