Which light-weight yet powerful laptop should I buy? I like the Sony Vaio Z, followed by the MB Air and the Thinkpad X200. Am I missing any models? I'm looking to replace my current work laptop - I use it for web development, so I need to be able to run Apache, MySQL, PHP, and some other stuff. I also use Chrome pretty heavily, and of course I watch a DVD every now and then, play music, etc. I don't run an office suite or play any games.

I carry my laptop to and from work every day, and my current HP is pretty heavy, so I am looking to buy the lightest laptop possible that still has a real CPU (e.g. no Atom, ULV, etc). I don't want anything at all resembling a "netbook". What I'm not considering at the moment is price - I'm happy to pay extra for a nicer, lighter, laptop.

At the moment, the best option I could find is the Sony VAIO Z-series. It weighs 3.3 pounds, not the lightest on my list, but it has a nice CPU (a T9900 @ 3.06 GHz). The MB Air is 0.3lbs lighter, but the CPU clocks in at 2.13 GHz and as expected does slightly worse in benchmarks. The Z also has a higher-res screen. I use an additional external monitor, but it is a nice extra. The Lenovo Thinkpad X200 and X200s are lighter even than the MB Air, but have even smaller screens and slower CPUs.

(Note: I am aware of the Z's in-BIOS VT block. I have no problems with patching the BIOS to work around this. I don't consider it a downside.)

Additional details: I plan on running Linux, so gross Linux incompatibilities are a no-go, but I think I can handle anything merely pedestrian. Also, I plan on swapping out the HDD with an SSD some point in the future, so if that has any bearing on anything, I'd love to know. I'm still in the research phase for that.

In short: I want a light yet powerful high-quality workhorse laptop. The VAIO Z looks to be a good balance.

My question: Am I missing anything in my analysis? Do any of these laptops have any glaring flaws? Are there any other models that have solid build quality and similar or better specs?

Thanks!