I received mine yesterday and while it's nice I wouldn't rate it as fantastic as there are a couple of what I would call show stoppers .
1. Google chrome doesn't work . I tried side loading an older version and that still didn't work .
2. The usb charger it came with is crap , Resulting in the tablet becoming unresponsive and erratic while charging . Fairly certain this is a crappy charger problem as I have seen the exact same problem with some phones that do the the same with crappy chargers . There is no dedicated charge input which means it takes forever to charge over USB (7+ hours) . I can see why most larger tabs are not chargeable over USB , It's just too slow .
EDIT: used a better charger and charge time is about 4 hours .
3. GPS does not work for me .... . I haven't tried with a sim installed as it's for my son but A-GPS may help .
4 In certain circumstances it just keeps going to a blank screen as though the power button has been depressed . Press the power button and it behaves as normal but annoying when your playing a game where it seems to happen frequently . Mostly during minecraft and clash of clans which my son seems to enjoy . I tried watching a 720P movie over wifi and it was perfect as was browsing using the default browser .
Edit: this random power button issue seems to be caused by the case flap moving . I think it may be caused by the magnets in the case flap . I ordered it with the "official" case but with Aliexpress that could mean anything .
The positives are that it is very smooth and games look great on the high res sc]reen . The colours look really colourful without the ronald macdonald overblown colours of Samsung tablets/phones . Although when reading text on a white background it does tend to look a little grainy but better than other tabs for sure and lessens as the brightness goes up .
I haven't tested the camera as yet and probably never will .
I'm hoping there is a firmware update to resolve the instability issues as it's a cool tab but a little finicky as yet .
EDIT:starting to like it a lot more . , It's really just the GPS and Chrome issue .