One thing I would question about cheap tw is: are they all the same? If my neighbor bought one yesterday and I get one today are their performance equal? Can I draw conclusions from somebody elses experience or is it a game of luck every time? So basically is their quality of manufacturing and quality control so good every wrench is equal in performance? Probably not as its something sometimes even high end manufacturers are struggling with. But, is it more likely to get uniform quality from high end manufacturer? Probably. Does this also mean that I can trust the expensive tw to deliver same torque click after click? More likely in my opinion.
In our case, we have well over a dozen of each of three brands, all bought separately at different times. Of the two high end brands, one is consistent in failing calibration after one year of use. Meanwhile, the other high end brand and the HF has proven themselves to be superior in accuracy and durability. All over a period of years
So how does one choose? World's most popular high end brand - ignoring multiple owner reports on failures as anomalies. An industrial brand at the same premium price with good consistency but bad ergonomics. An import from one of the most low end tools stores in the US - ignoring multiple owner reports of quality and consistency as anomalies.
Lets look at it another way - value. Not to be confused with cost. What seems to be agreed on in this thread is that all TW need calibration. It's tough for someone to get their head around spending $50 to calibrate a $15 TW. The value of any TW that consistently fails is zero. TW's that consistently pass all have the same value, regardless of the cost.
Is it worth paying a 1500% premium for a "feeling" of trust, knowing that all brands can fail and they all have to be checked regularly anyway? When a cheap tool breaks we can beat ourselves up and say we should have gotten something better. When an expensive tool breaks we get to take the blame off ourselves, after all, we bought the "best". We refuse to evaluate the tool on it's own merits. Marketing at it's finest.