Don't get a torque wrench that will torque up to 300 lb/ft if you only need to torque something to 5 lb/ft. That will break bolts. If you need something that does small torque figures, get an lb/inch torque wrench and to the math.

Most torque wrenches are horribly inaccurate in their 1st 1/3rd of adjustment.
Check this PDF file from Snap-On about torque wrench error

Craftsman are decent, but if you want to get a $50 wrench recalibrated you're better off buying a new one. Sears charges something to the effect of $75 to recalibrate a torque wrench last time I checked (its been awhile).

I own 3 different torque wrenches. One is a 3/8" drive lb/inch, one is a 3/8" drive lb/ft (up to 100 lb/ft), and the third is a 1/2" drive that goes up to 250 (I think) lb/ft.