I recieved the Scangauge a couple of days ago, definitely a neat little gadjet.
It seems to be able to do everything the cheap code readers can do and then lots more, for example, it will "freeze" the data when the vehicle throws a code. it can measure air intake temperature, engine load, TPS position, current and average mpg, current and max rpm, current and max coolant temp, current, max and average speed.
Another nice feature is the compact size and it goes from vehicle to vehicle easily.
Thanks for the link rossb, It was money well spent in my opinion.
Vince