Torque Wrench???

you asked what size you should get, 1/2 or 3/8. What torque range are you using it on? I have a 3/8 that is good up to about 75 ft lbs and a 1/2" that is good up to 150. I recently bought a 1/4 cuz I needed to do something with inch lbs. I like the 3/8 for anything under 60-70 ft lbs but use the 1/2 for stuff 70 and up. Also, with the 3/8 being a bit shorter, it is easier to use under the hood and other spots where the longer 1/2 is a bit cumbersome.