Coupla guys use these for taking their wheel lugs off at the track, it sure makes quick work of that part of your day. You should consider you can get a 300 ft/lb air driven impact for the same price as that horrible freight driver, so if you really dont need the cordless freedom there is no point in buying it. That said a friend of mine has one and it seems to do the job quite handily, it really depends on what you're using it for.

Ah, it seems you have the same idea we all did when we bought ours. That horrible freight driver should work fine, my teammates had his for a year with no problems. To avoid the re-torque with a torque wrench problem you could look into a torque-stick. You attach the stick between your socket and the driver and it is tempered in such a way to torque whatever youre working on the same every time. They tend to be very accurate.