So my use cases are this as this is really an extra computer to complement my 5K iMac: Surfing the web Netflix Photoshop - doing some light editing of raw images Final Cut X - light editing of videos shot on my phone. Nothing intensive Microsoft Office Looking for the most economical solution without having to bang my head on the desk while using Given the above, how much of a difference will I see between a 2014 and 2015 MB Air? The 2013 vs 2015? I'm not opposed to carrying an external USB drive or using some cloud storage. Would 128gig be ok? I just cleaned up my apps/etc and did a clean install on my new iMac and right now am only using 350gb (200gb alone is my Aperture library) I know 8gb is optimal and that can't be upgraded (like the SSD) - but how "bad" would the 4gb be? I had a 2009 iMac with 4GB before the new iMac and towards the end, it seemed like it really dogged. But that could have been many factors since when it was new it didn't have 1/2 the slowness it had when I got rid of it. Thanks for input! I know bigger/more is always better. Just looking for real use cases from those that might have older and/or less specced out machines. Thanks!