I have the BrownLine digital wrench for bigger jobs. I'm not a pro so I haven't used this on a constant day in and day out basis and can't speak to longevity in that sense... but I've had mine for several years now and it's held up well to my shadetree mechanic tasks.

http://www.brownlinemetalworks.com/torque-wrench


For smaller jobs I have the Tekton 24320.

http://www.amazon.com/TEKTON-24320-4.../dp/B00C5ZL2EG