I've purchased a 17" MBP from Apple as a refurb now twice and both times they have been legitimately indistinguishable from a brand new machine other than the fact that they don't ship with the regular box. There have been absolutely no signs of wear and I never ran into issues with either machine. Both were kept around 15-18 months and used every single day.
Keep in mind that Apple does retest and verify every refurb prior to reselling them so if there was any issues major or minor it wouldn't be sold. I personally highly recommend going the refurb route as the savings on most configurations are incredible.
I've had my refurb 15" MBP for over two months now, and I love it. The quality of mine also is indistinguishable from a new unit. It even had that "new laptop smell." I had my refurbished unit sent to my local Apple Store, and they went through the same complimentary initial setup as a new product. So, if you don't mind waiting for delivery, refurbished is a great option for saving money.
Yeah...you definitely need a new computer, 'cos your search button doesn't work. Lots of discussion about refurb MBPs already in these forums, including a couple of posts from me talking about how you get a great computer for an even better price.
Buying a refub from Apple = no worries at all. Unless you don't like saving money, that is.
In my own case, I even got 8GB RAM instead of the normal 4GB in my Feb 2011 17".