Since I have little carbon, one fork, I generally don't use a torque wrench. Most everything is done by feel. But there are exceptions.

I like to use a torque wrench for square taper/ISIS/Octalink cranks and attaching a NDS crank arm. I like to use one on faceplate and a threadless stem bolts. I will also use one to attach a freehub body and even a cassette lockring. I have 3 torque wrenches I have picked up over the years from 1/4" to 1/2". I have used a scale to check the torque at different settings.

I can't say going cheaper or more expensive is better for working on a bike. But it is funny that someone will spend $500 on an adjustable driver (golf) and then use a cheap $10 torque wrench to make head adjustments or set weights.

John