My husband and I are looking to upgrade our old early 2007 Macbook to a new iMac. The thought of the fusion drive sounds nice for the speed, but we are only average users (no gaming, video editing, etc). We mostly use it for web browsing, documents, and occasional photo editing. The cost (since it's not available as an option on the base model?) difference is pretty big, to upgrade to the upper end 21.5" then add the extra $250 for the fusion drive. Is it worth it for just an average user? Any advice would be appreciated. Thanks!