Can you please let me know if I'm crazy with the following... I currently have a mid 2011 Macbook Air with a SSD drive and 4 GB RAM. I'm very happy with it. My son needs a new laptop and I'm thinking about buying him a refurbished, just off of lease Macbook Air which is the same as I have for $550. I'm comparing that to a brand new $550 Dell Inspiron i5. My son will use it for browsing, cloud apps, music, etc. No video production or heavy CPU stuff. Trying to keep the purchase around $500. Would I be crazy to buy a 5 year old Macbook Air for $550? Would I be crazy to buy without a warranty (looking to buy from Microcenter)? Thank you!