I bought one of those 2 weeks ago, I actually set out to buy a Meos 13.3" but after 2 faulty models (yep 2) I returned to the store and got the Nikkai 10.2 instead. Can't fault it really for the price and it will play MP4 / avi through the USB so all I have to do is download from youtube , stickk it on a usb and hey presto can watch stuff even if there is no signal.
One drawback is that I have discovered that it needs a clean 12volt supply. i.e. will not run directly from the leisure batteries as , when charged they are over 12 volts. so I have just had to order a voltage stabiliser, in this case I bought a 12volt travel adaptor for a laptop off ebuy.
This may just be my set up of course and not a general issue as I have recently got a new van and am not familiar with my electrics as yet!