I'm just wondering if it's worth my time to get rid of my '08 15 inch MBP (2.53ghz, 9600GT 512mb) for a smaller 13 inch MBP... either a used 2010 (2.4ghz, 320m) or the low end SnB 2011. At this point I might end up making 1000 for my 15 inch and I found the 2010 13 inch for $850 and the 2011 for $1080. In terms of usage it won't be used for gaming... more movie watching, internet surfing and writing. The pluses on the newer systems is battery life and speed (only in the 2011?) is it worth doing this swap or should I just hang on to my aging MBP?