The dobeck is an OK controller. The power commander is the one to have. With the power commander you can dowload maps right off the internet and install them. You can adjust the a/f every 250RPM when tunning. It is WELL WORHT the $100.00 extra bucks. Here are some of the benefits
-Dobeck-
PROS
* costs about $100.00 less then the power commander
CONS
* cannot tune with a lap top
* cannot download maps onto it
* cannot share your map with another person
* externally adjustable only
-Power Commander-
PROS
* can tune via laptop
* can download maps onto it
* can share your map with others
* externally adjustable also
CONS
* $100.00 more then the Dobeck
FUELATV