I am considering the purchase of a 13 inch MBA for professional DJing needs. The software i use is Serato Scratch Live and Traktor. I've tried these apps at the store and they were really snappy on the 1,86 4gb MBA so no problems there.. The problem lies in that my entire music library is huge ( about 2 TB ) and therefore i will need to often swap files since i can only afford the 128gb ssd... I've read in another thread that the stock SSD's on the MBA do not use sandforce or TRIM and therefore strong performance degradation is to be expected. I want this laptop to perform well for at the very least 2 to 3 years, but i will be putting it to heavy daily use ( 4 to 6 hours of DJing ). From what i also understand, ssd degradation is worst with small files, and DJing software is constantly putting to use small mp3 files, writing cue points and tag information and such.. I've also heard that OWC is launching SSD drives for the MBA using sandforce ( http://arstechnica.com/apple/news/2...ndforce-based-ssds-for-latest-macbook-air.ars ) but these will probably be costly.. of course the alternative is a MBP, with a third party sandforce SSD , or maybe even a MBA + USB flash drive for music combo..