Currently running a 2011 iMac, 27" 4GB RAM 2.7GHz, 1TB HD, planning on getting MacBook Air 2013, 13" 8GB RAM, 1.3GHz as well as the iMac. What I want to know is how the two compare (I'm probably far more ill informed than most of you) and what I'll be missing out on that I'd be used to with the iMac. While I don't use a lot of files (mainly photos as I do part time editing for a website, and some personal video footage) I'm not overly fussed about going from a massive 1TB to 128GB as I know that I can always back up files I don't always need onto an external. What I'm wondering is HOW actually little space 128GB is. I don't have many apps, just office, photoshop, LOGIC, and FCP X. I remember having to constantly free up space and transfer files on my older laptops (mind you I have a tonne less files now) and it was really annoying. (Keeping in mind I know nothing about processors) will the new Haswell processor be comparable to the faster iMac/macbooks? This will be my first mac laptop and I'm a little worried, remember back to the days where I'd edit footage on a little old Sony Laptop and the thing would CONSTANTLY lag. I definitely want to keep THE MBA, but will reconsider keeping the iMac after a while to see if I could survive off the one laptop. Interested to know how the MBA will cope running programmes (not so much multitasking) such as FCP..Photoshop..etc. Any insight would be appreciated.