I guess the SA series is the ultra-portable 13.3 inch. I have had vgn z11 for 3 years now and it does everything i need and has been hassle free. The only draw back is only 2 usb connections. Perhaps the Sa have improved on this. John Lewis is a reliable seller and presently have the SB series for £1054 and worth checking is the s13 for £699, both with a 2 year warranty. Not compared them, but been looking at the S13 as a possible upgrade for mine. The pic is good, ideal for lugging around and watching movies far from home especially as the weight is less than 2 kilos. Hope this helps, here is a link, I hope! John Lewis Sony laptops
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