Whats the difference between these two, apart from price. ?? In short of saying $$$, and the lack of off 256 SSD, or i.7 upgradable option, is there any but performance difference ? 128 SSD doesn't really matter to me as I'll have massive 1TB external for storage anyway. Maybe have VM's installed on the SSD, apps etc. but apart from that most would be on the 1TB.