I had a Vaio a few years back, slow as mud and had a dodgy bit on the screen.
Then I bought a Y series (Y11) and it's pretty but it's slow to load anything, the magnesium outer case bows in the middle (A bit stupid imo for a laptop) and the keys are too far apart for comfort.
I also own an NC10 and even though the video card is 3 generations older (GMA950 as opposed to the Vaio's MHD4500) the NC10 doesn't suffer in game slowdown like the Vaio does.
I'm thinking of getting the Samsung X420 and having done with it.
I liked the idea of a CULV cpu, longer battery life, light and portable. I'm not looking to play Crysis on the damn thing but I want to step forwards from the NC10 not back!