Default [Q] Need Help, Which Android tablet is better?

I am looking for a tablet for my family member but as there are many models with different features and sometime they overlap each other. Also price is a concern as I have budget of up to $160 (+/- $10).

As I search on net for tablets, lot of Chinese tablet came up with the price around my budget and many less than that. I summed up my search to Ainol tablets including Ainol Venus and Discover. But as I read the reviews regarding both tabs as well as other Ainol tabs, it seem as there is falling trend of quality or maybe they had such experience from having Ainol tablets.

So it would be very helpful if someone guide me in choosing a tablet from Ainol Venus or Discover or maybe better than both within my budget. Also there's another tab, Pipo S3 tablet as it is Dual Core whereas the above tabs are Quad Core. This is the another factor which made me confuse to decide for a tab. Either should I go for Dual Core or Quad Core? Please guide.

Tab with these features would be better:
7 or 8 inch, IPS screen would be plus, 16:9 screen ratio would be better, 1 GB or 2 GB DDRam, 16 GB internal memory, no GSM/3G required, bluetooth would be plus, dual camera (regardless of megapixels), Android 4.1/4.2, HDMI output, OTG port

Thanks in advance.