I have a Macbook Air 2011 i5 128gb; I upgraded from 2010. 1st Try found the screen bad; had the LG screen and had Toshiba SDD but was happy with the speed. 2nd Had the LG screen again but seemed better for some reason...but had a Toshiba SDD again and this time I found it slow! 3rd I got the Samsung screen and Samsung SDD; happy with the screen much prefer it to the last 2 LG screens, also the Samsung SDD is noticeably faster to me. Just wanted to share my experience.