HELP MEHH!!! PLEASE??

Should I upgrade to windows 8.1 from windows 7??
I can get it for $70 and i'm really contemplating it.
Really debating the fact because I don't want to let go of windows 7.
I'm getting a Ultrabook for college with windows 8.1 and just don't know if I should get it for my desktop.

So help me decide? Maybe.. Please... Thank You smiley0.gif