Posted: 10/11/2014 at 20:22
I'd go for Windows 7.
Now that support has ceased for XP, Win7 is the next best option.
I'm not a fan of Win8 even with the new makeover.
Win10 I think will be available in a year or so.
A good place to look is the Dell Outlet site - I paid £800 for top spec PC (I'm not a gamer so have no need for a fancy and expensive graphics card) but has 3TB disk, 24GB RAM and 3.2GHz i7 processor. It is also very quiet when running which is important to me.