What do you guys think? My wife's 2007 Macbook (Santa Rosa) is still running Snow Leopard, as I was not sure if upgrading to Lion would be the best thing to do. In other words, I was not sure if that model would perform better with Lion, as it currently works very well with Snow Leopard. Is there someone out there that can provide advice? My wife has no problems with Snow Leopard and she just wants whichever OS runs better on that particular model. Machine Specs: 2.2 Ghz Core2Duo 4GB Crucial RAM upgrade (awesome..just months ago, and gave it new life) 320GB HD (upgraded a year ago) Running OS X 6.8 Thanks!