Hehehe... night and day brother. The Durametric is nice. You can read all sorts of information with it, but you can change very little. The PST2 though pretty much does everything. In fact, a lot of guys here would give their left nut for one. If you can get a PST2 for anywhere near the cost of the Durametric software, then there's really no choice - definitely get the PST2. Plus you'll make a LOT of new friends with the PST2 as other Porsche owners will want you to help them fix issues with their cars with it.
