In my experience: the Plus II is good, if you can live with weak wifi. This is the point.
1.Look like wifi was not that good, is it getting better with any recent update?
Until now no update. And it is not clear wheather the problem is to be solved by an update.
2. How well does the SD card works in both Android and Windows?
Sd card works in Android and Windows
3. How about battery Life?
Ok
4. Is it a good but or I should skip it?
In my opinion wifi is the problem…