The Gladiator sure looks nice. However, compared to the T16000M it's double the price. At least at Amazon, the TM is $49.99 and the Gladiator $99.99. If yours went out of calibration every four months you might have got a lemon. I haven't heard complaints from the half a dozen users I personally know, neither have I had issues with mine. Might also be a hand issue, the users I know might have mellowed due to aging.