You get what you pay for as a general rule with tools. I will torque wheels with my crapsman torque wrench at home--anything else and I bring home the big $ Snap On variety from work. My newest purchase was a 3/8 0-100 lb/ft digital that will do angle, ft lbs, inch lbs, and Nm. $450 and worth every penny. My other mechanical click-type were $200-350 each, one inch/lb 40-250, one 1/2 inch 50-250 ft/lbs. Not bragging, just saying. I own the one at home, but use the others if it's really precision. My $.02. Dave
You get what you pay for BUT only get the proper results out of it if one uses it properly and stores it correctly.
Never go beyond the rated limit.
Never drop it or shock it.
Never leave on a surface that has dirt.
Never store click types without backing them off.
Never loan it out to someone who does not know how to properly use, handle and store it.
A real bad habit is resting them on hard surfaces while working, always have a patch of carpet on the concrete or asphalt if a bench is not handy.
Dial types are more accurate that click types, and over a wider range.
Click types are near useless at or near minimum wrench ratings, the tolerance is huge and there is no repeatability.
Beam types are the least accurate, but will tolerate the most abuse.
If you have a beam or dial type that is a bit short of the needed torque value, say by no more than 15 % and you do not have anything else bigger handy, torque to the wrench limit, then clock the fastener another 10-15 degrees with a flex handle. (you can use a ratchet, but flex handles are longer and give more leverage and control)