y paid Windows version. Because the price of windows is almost the same as my laptop (LOL) and I feel comfortable using the free version. I think it will not effect too much for the windows.
A valid cd-key for windows is very cheap, i think you can buy them for around $10-$20.
But hey, if it works for you why change.
Op is trying to repay already started repaying the loan.
That's great mate, funny to hear that you guys have started a solution.