Buy new and use a credit card that has an extended warranty on it. AMEX automatically extends any 1+ year warranty an additional year, and <1 year warranty to a full year. Even if I have cash, I still charge it and send the money into the credit card as a payment. It saved me not long ago with my Macbook Pro. AMEX just wrote off half my original purchase price and let me keep the laptop (to get fixed or not). I fixed it myself and sold it on eBay, and I made SURE that my new iMac was bought with my AMEX card.