Diffrent versions of 8.1

So im looking to buy 8.1 for my new machine because i cant find student versions of win7. I have found windows 8.1 student on the windows store for 49.99 then i looked and found pro for same price then pro n for the same price so what is the difference between all of these versions?

 

http://windows.microsoft.com/en-us/windows/compare

http://windows.microsoft.com/en-gb/windows-8/n-editions

The regular Windows 8 edition will be good for almost anyone.