m1330 > airshite
airshite is great if all you do and plan to do is write. If you plan to watch dvds, don't bother because this "ultraportable" ironically requires you to bring the external hdd with you. (m1330 has a slot loading dvd burner).
the hdd that you have is limited to 80 gigs, but at 4500 rpm, not 7200, not even 5400. They threw in the ipod hdd. Rather sad. The minimum hdd on the m1330 is 120g 5400 rpm drive. It can be upgraded to 200 gig 7200 rpm.
s-video? great, but where's the HDMI?
audio ports? there are two on the front of the m1330, so that two people can listen to a movie played on a plane without sharing earbuds.
media buttons. m1330 has them, airshite doesn't.
i'd trade all the multitouch capability for the ability to have a right click button.
remote on the m1330 is built in
that's all the stuff off the top of my head