I have the late 2012 13″ Air. I would recommend opting for the SSD. It really does help with a low-ram setup (4GB is not a lot). I know you were speaking of a Serato setup, but I’m able to run Traktor with 4 decks (2 remix decks) and keylock always on at “192” latency settings. No matter what I do, I can’t MAKE it glitch even slightly. It’s a little workhorse, and the screen is surprisingly easy to read for its size.
