I have spent the whole afternoon on my brand new GPD XD (black 32Go model, upgraded to 3.3.3), and this device is excellent.
I had a JXD 5800 before that, and you can really tell that two years have passed between the two consoles. Bright screen, nice resolution, the controls are classy and responsive (love the D-Pad ! and the clicky side buttons).
A few things that could be criticized :
- on full volume, the speakers can sometimes be a bit noisy (but full volume may actually be a little TOO loud)
- as for the screen colors, I feel like the reds are a little dull. It looks like hot colors may lack some brightness
- the hinge sound is there (but it really is a detail)
- about the apps : emulators work perfectly well, but some apps closed unexpectedly a few times (play store, gmail...). can't sync my google calendar, can't figure why
These are just details. The manufacturing is great, the apps run pretty well. I love it !