Haven't seen or bought or fitted one.
However, it simply falls into the category of 'cheap mass market headunit built to a price'; there's many such headunits on the market and much feedback about low quality. I'm not saying it will be terrible or bad value, however, it is built cheaply. Relatively speaking
, it will not be as good as a namebrand product in terms of picture quality, sound quality, build quality, reliability, and after market service/repairs.
Headunits costing 6 times as much will not be 6 times better. Things like this follow the law of diminishing returns. So you have to decide what your expectations are, and at least be prepared for something of low quality that might break or meet expectations.