What sort of case are you guys using for the device? I mean the protective ones, not the sleeve cases. I want to get the portfolio case, like this one here (http://www.i-tech.com.au/Library/Include/PrintItem.aspx?id=92336&name=Acer%20A5-CASE%20A500/%20501%20BLACK%20PORTFOLIO%20CASE%20FOR%20ICONIA), but can't find it anywhere in Malaysia. Help?