I am contemplating selling my 15'' MBP to get a MacBook Air. Part of the reason is wanting something smaller and lighter. I'm curious if there is anything that I will notice by moving to the MBA? I don't do crazy photo editing with Adobe, however I use iMovie and iPhoto. So I know there won't be any change with that. I also use Handbrake and SPSS which can be resource heavy. I doubt the MBA would have any issues. Am I correct?