Hi everybody - I'm in the market for a 12" powerbook w/ superdrive. Smalldog has a great deal on a refurb Rev. A 867 model, but I've always been a bit wary of Apple rev. A's. And while I'd certainly like to save the money, I'm willing to spend more for a better quality machine. I could care less about the 133 MHz difference, but is there anything else that would make me think twice about buying this one? I've heard about the heat/warping problem, but I've also heard that Panther fixed this. Since I would be getting it basically new, I wouldn't get the warping, right? Does the 1GHz get hotter than the 867, or vice versa? Also I've heard the Rev. B screen is better. Is this true? Any and all input would be greatly appreciated. Whay would you do? Thank you!