Im debating on buying a used 2009 macbook pro 13 inch (the metal unibody one) and it has 500gb of storage and 4gb of ram. I'm gonna replace the battery on it considering its at 1031 cycles. I can get it for $320. Is this a good deal, and will it run ok for web browsing, music, and transferring images from my DSLR? Or will this thing be a clapped out pos that will aggravate me because its so slow? Thanks.