@meleu I have had one of these for about a year and a half and mine is still in very good condition. Maybe it depended on who you bought it from. The only thing wrong with it is the creaking sound when you open the lid (which was a problem for all GPD XD's day one).
It's the perfect emulation device (the Nvidia Shield Portable was far too big). PSX using ePSXe has nearly 100% perfect emulation for the whole library of games (it's better than the PC version). The only thing missing from this device is a decent frontend. Gamesome is usable but average so I would love a port of EmulationStation/RetroPie.