I have, over the years had many laptops - from Vaios, to Compaqs, to IBMs to VoodoPCs to Alienware.
I love the X31 from IBM. But Intel wanted it back - so be it.
What would thin and light ultra portable would you buy - no CDROM at all needed. Has to have exceptional battery life which tends to mean Centrino. I won't play games all I use it for is WiFi access and portability.