Bruce,
It sounds like you are locked onto getting a torque wrench so the only decision left is what wrench is going to give you the best economic value for your intended use. Having aircraft accuracy is not going to be a deciding piece of the puzzle although a wrench that is somewhat accurate is needed. Even the cheapest HF and Sears wrenches will be accurate enough for your purpose.
I would suggest that you get not the lowest priced model but slightly above that tier.
There was a review of torque wrenches in a popular auto magazine (can't find the link) and they concluded that the HF wrench was as accurate as the Snap-on model. The review didn't cover durability, though.
That Craftsman on sale wrench should work out well for you, IMO.