i was also looking at harbor freight and the reviews on their little 1/4" torque wrench were all over the place so i passed on it and used the money to get a better wrench.
ended up going to Ebay and getting a STEAL on a CDI torque dial wrench in perfect condition. ive tested it against calibrated wrenches and its right on the mark.
if it were my money i would just spend more on a quality name that will last for years. if you are on a budget get a lever beam torque wrench.
and for a portable tool i might consider this tool below which for some reason i hardly hear about, even though it is made by a quality tool brand.