I'm a sceptical bastard and if you ask me....a tuner will tell u to buy brand XX because thats what they sell..

Asking people who have brand XX computer already installed in their car is a better way to go.

I have extremely little knowledge on computers.. but having done a little bit of research the Haltech does seem like a good unit..It has plenty of auxillary inputs and outputs, plenty of maps and plenty of compensation maps. It does cost more than the cheaper engine managment systems such as : ems, microtech, wolf, hawk etc but at the end of the day...better spend a few more dollars and have a sweet runnin car than a car which runs worse than a carbied car.