Has anyone had experience with the refurbished PB's? I am looking to buy the 15" 1.25ghz PB very soon and wondering if I should get the refurbished (2099$) or not save 250$ (2339$ w/gov. disc.) and get a brand new one. Another thing is that by using my Visa card to purchase the PB I can get up to 4 yrs of warranty, so I am not getting applecare- after two years (it gives you a free matching factory warranty to what apple gives- so apple and one year visa) I can opt to buy another year or two of service for 150$. Has anyone had experience with the visa warranty services??