I currently have a 2009 Macbook Pro, 2.4ghz Core 2 Duo with 4gb RAM and a 500gb hard drive. It's been almost unbearably slow lately and even after formatting it it gets back to being slow after a month. The battery life has gone down to about an hour and occasionally shuts off by itself. I'd really like to replace it with a desktop that will be fast enough to deal with my giant photo and music libraries being constantly open and occasional video editing. I also don't have a ton of cash and don't think I can afford a new one. A friend of a friend has offered to sell me his 27 inch iMac 2.66ghz i5 with 4gb RAM and 1tb hard drive. He wants $800. Is this a good deal? Would this computer be fast even though it's from 2009? Any advice would be appreciated! Thanks!