Recentley I've installed 8gb Ram from Crucial and 256 GB SSD from Crucial. My Macbook Pro 13" is back to very fast power, it's a 2010 model, 4gb ram, 2.66ghz 320gb (STOCK Spec's). Now it's on OSX Lion, 256 GB SSD, 8gb ram and I am more than happy. I just got a iMac as well with 4gb ram, i5, 2.7 and it's 27" soon to be 16gb ram. If you can get a SSD it's a must have, the Macbook is lightening fast now. It takes 30 minutes to install and boot up a fresh copy of the OSX. Very very satisfied.