got mine earlier, pretty pleased with it so far. it feels very sturdy and quite weighty despite also feeling quite hollow (in the grips). the wifi works fine, it charges via micro USB (so you dont have to use to the supplied charger) and it's very quick.
there are a few software bugs here and there, such as:
sometimes reboots when you put it on to charge, or occasionally when faffing in the menus.
for some reason it will not remember what i put on the desktop, every time i reboot all my icons have gone.
when hiding the softkeys during emulation the game still won't occupy the entire screen vertically (just leaves a black bar, sometimes at the top?!), and unless i'm being a right retard it's impossible to swipe up to bring the keys back without quitting the emulator.
seems i wrote quite a few negatives but it's easily the best android handheld i've used, both in build quality and software stability. i hope the quirks get ironed out, because then it'll be close to perfect.