While Dave's review was entertaining, fairness wasn't high up on the agenda. Dave couldn't even find the precision resistor network on a very simple board design.
Nobody will dispute the very basic input protection and the slow continuity test on those meters. If you can live with that, the meter has some redeeming aspects. It offers a host of features for the electronics hobbyist at a very affordable price.
The Cyrustek 40,000 count dual slope ADC, while not the fastest, is pretty good (also used in the FLIR meter) and drift, which I monitored over 2 years, is minimal. Calibration can be done
through the RS232 with connection to calibrator or, cheaply, manually with the trimpots. I haven't had to adjust mine yet, unlike the 61E.
While I also own Fluke and Gossen DMMs, I value my UNI-T meters for specific tasks, like datalogging and peak detection, for instance.
Here is my 71D review, if you haven't seen it yet:
https://www.eevblog.com/forum/testgear/uni-t-ut71d-review/