A&P here, my two cents:
Based on your experience, I would absolutely not buy another.
There are several good points made here. Yearly calibration will give you peace of mind no matter the brand. Click type wrenches have come a long ways and work very well as a general rule. Brand may not necessarily dictate less quality but a company that consistently polices quality control will perform as advertised and meet your expectations without exception.
I used and still use my snap on torque wrenches without issue. As a part of a 135 operation we were required to have a calibration and were regularly audited for that. You didn’t go into specifics as far as repair station, experimental (voiding part 43 maintenance personnel requirements), or if you are under an A&P supervision. Check what regulations require for this operation. However, this is like a different conversation.
To conclude - I have cheap torque wrenches and I’ve calibrated some cheapo’s for friends. Quality control is really hit or miss. You might have a good one and you might have a bad one. You don’t know until you take part in the time honored maintenance tradition of calibration programs everywhere. I always like to chime in on these posts because people always want to know if their value brand tools are OK. But you don’t know until you know! At minimum you should send your precision measuring equipment for calibration.
