For cheap and accurate, look at this little device. It gives all the ease of use of a "clicker" torque wrench and the reliability of a beam wrench.
It allows you to program in the desired torque setting and gives an audible beep + a digital torque readout. I tried the thing against my other torque wrenches and the internal electronic load cell seems to be very accurate, no matter how many times you repeat the action.
It also uses any combination of ratchet, breaker bar etc to drive the thing in a difficult place.
As to the cheap part, I believe the gadget is on sale right now for $30