[JFP in PA]

There are only two Porsche specific tools, the PIWIS and the Durametric system, both require a laptop to use. The PIWIS will set you back $17K for the first year's lease, the Durametric about $300 to purchase the Enthusiast system.

For non Porsche specific systems, Actron makes nice stuff at reasonable prices, but it cannot see and will not clear many of the codes on a Porsche (air bags, ABS, PSM, etc.).