Netbook or Tablet?

So, I am not pretty sure what to get, and even if I really need one. I mostly want it to take notes/write a word document and surf the web.

The first big question is: "Do I need one or just want one?" I really love gadgets, but is it something that I would just spend my money to and I won't use it as I imagine?

If I get one, the next question is, what to get? A 7" tablet is far more portable than a netbook. But the netbook has a keyboard on it so it will be easier to type. But netbooks are a bit "old fashioned" now. But but but... Many "buts" and "ifs".

If I am to get a tablet I'll get a Nexus 7, so I want something in this price range. What do you think?