Battery life is an issue, no question about that, but that's often true in general for China tablets, regardless of display size.
I really wonder, what do you use your tablet for? I read documents, emails, browse the interwebs, and watch movies.
1. There are no significant performance issues when reading documents and the 4x as many pixels makes a HUGE difference in the clarity of the text. I can't go back to my non-retina tablet for reading documents now, it just looks like crap.
2. Same goes for writing emails and reading homepages and emails. I really can't say I have had any performance issues either. Web browsing was sometimes slow on the v972 before, but it seems to mostly be a software issue and seems to have been greatly improved with the 2.0 SDK.
3. As for watching movies, there is no lag whatsoever, not even with 1080p material. So I don't see how a Retina display wouldn't be preferable here. (Except 1920x1080 would obviously be more logical if you're into watching movies a lot.) It's still perfectly fluid, and you have enough resolution for 1080p, which you don't on 1280x800 or 1024x768!
For gaming, I would perhaps not recommend a retina tablet. Then an edge in responsiveness is probably more important than having a lot of pixels. But that's about it. If the bulk of the time spent on the tablet is some form of reading text and watching movies, I would definitely recommend an A31 retina tablet. It is not terribly slow. It actually works just fine. (Or possibly wait a while for RK3188, but then you can always play that game and wait for something slightly better...)
I perfectly agree with you bro
even I bought a ainol spark after lot of thinking
but I think it's a perfectly usable tablet apart from minor lags out stutter in navigating sometimes
but movies play real good
most games play real good and look awesome
pdf lags a bit but if you forget about simply scrolling across pages to see it's smoothness and actually read something then then next stutter will come only after 5 minutes that you will take to read and immensely enjoy reading!!!
I think I can recommend these tablets to anyone but the only worry is about longevity of these Chinese goods