I haven't found anything the ScanGauge can do that Torque can't. Plus, since I already had the bulk of the hardware, a $17-for-two NewEgg Shell Shocker deal about 6 months ago got me two adapters to play with (which are inevitably in the wrong two vehicles!!).
The connection takes seconds, and can be automated with an app like Tasker if your phone is rooted. The screens can be set up with specific configurations for each vehicle, which is especially useful since some PIDs are used in some vehicles and not others.
Oh, and the sum total of my investment for everything (not including the phone, of course): $22. A ScanGauge can't come close, and is nowhere near as portable or customizeable.
