Does the build quality seem any different? Mostly in regards to the buttons.
Having had a JXD, and currently owning the G7 and G5, this is definitely the nicest thing GPD has produced. It feels solid, and the components (sticks, buttons, etc.) are of good quality. The action buttons (abcd) are the same as thier USB solo controller (the HERO) - which is also a nice build, come to think of it.
The black finish is solid - none of the flaking others have experienced. And while the d-pad and face buttons are softer, as others have noted, they are very responsive - just lacking a bit compared to the solid 'click' of the shoulder buttons.
Unlike the previous GPD models that I have, the ONLY way to charge this one is via the USB port. There is no separate power connection port. And there are two led power lights, one for power and one for charging.
Going into sleep mode when you close the lid is a very nice, professional touch. The screen itself is comparable to a good phone screen, the active display has solid blacks and whites, and the resolution makes text sharp. It may not be the ultimate screen, but it puts the G5 and G7 to shame.
The lid does not sit perfectly flat when closed, but angles out a bit on the opposite edge from the hinge - I don't know if that's because the rubber nubs where the screen rests against the unit are a tad large, or if that is a purposeful need to keep the d-pad from touching the screen (it looks SO close to it when you look through the side when the unit is closed...
My only personal complaint: I just wished they put that effort into upgrading the G7 or G5 - it is a shame that all the attention to detail is for a knock-off of the DS style, instead of cultivating their more original designs. They can't truly be a serious contender here in the US market (as they seem to want to be) by copying Nintendo. I know this is often the trend with these devices, but this type of quality combined with an original design would have been a real winner overall, not just with us 'tablet-jockeys'. Obviously that's just my opinion. The unit itself is one of the best that I've seen produced thus far!