Do you live near an Apple retail store. Because I was set on getting a refurb until I went in and asked them about it. I really wanted to buy my first mac from an Apple retail store but the guy said that refurb macs can only be purchased online.
But he DID say that sometimes people return them to the store within the 30 days with nothing phyiscally wrong with them, just the box was a opened once before (thus not completely new) but at least no faulty parts had been replaced as there wasnt any.
I didnt say quite as much as buy a refurb but with my student discount I got over £400 off which was great news for me as I now have the money for a DSLR or Cinema display.
Something to think about anyway, good luck and have fun with your new computer