With these things, you get what you pay for. If you need the small size and will go for that 7" model, you'll probably sacrifice something performance-wise as well as quality-wise. Make sure that it is not a locked down system on which you cannot install the software you will need to do your work. Silly thought, but on such a small/cheap model, you might be better off installing a linux distribution as that will make the most of the limited hardware that's in it. I know you asked for Windows... but the way I see it a laptop that cheap will soon struggle to run Windows smoothly. That's just a hunch of course...