There is no inherent reason why an electronic wrench should be any less accurate than a clicker or beam wrench; it's all about the quality. Both can get out of calibration if misused. A beam wrench has less to go wrong, but is often less convenient to use. I have three clickers and one electronic wrench. I like the electronic one for checking prop bolt torque because you can monitor the current torque like a beam, and have the audio feedback as well.