[99 Boxcutter]

I'm trying to decide which diagnostic tool to get.

Is the factory Porsche tool worth the price? I hear that you can do just as much and even more with a Windows computer and a cable. I've also heard about these $40 Chinese knock-offs, but I've never actually seen one, so I wonder it they even exist.

In addition to diagnostics, I need the feature where you can dissable things like the spoiler going up and down.