[Q] Best Dual OS 10" Tablet under $250

Hi, Im looking for the actual best 10" (or near 10") tablet with dual os (android-windows) with hdmi, bluetooth. I dont care about 3G but also I need one under 0

Also 64Gb option would be great.

I was interested in the Teclast X98 Air II in first months of 2015 but today I see many new options and really dont know the correct choice.

Any advice or recommendation please?

Regards!