tl;dr: Get the X1 Carbon instead; you won't regret it.
The Thinkpad build quality also isn't what it used to be.
I have the T410, which has a 1440x900 screen. It's certainly a bit of an issue, but I compensated by running a tiling window manager to save on screen real estate. And this might be more of an issue in Windows, where screen real estate isn't used as carefully.
I checked out the ASUS Zenbook Prime UX31A at a local store, and the trackpad didn't just agree with me. The poor Linux compatibility and the lack of a pointing stick are concerns as well.
> The Thinkpad build quality also isn't what it used to be.
I haven't seen any statistically significant proof of this. There's plenty of anecdotal evidence, but that doesn't hold up to scrutiny.
The fact that Lenovo advertises some of their products as rugged is simply laughable.
Already sent mine back once - mb and fan replaced, no change. Warranty service says they will replace the cpu next.
Avoid the W520.
Definitely recommended, though not particularly cheap.
I'm not sure exactly how the Vaio Z is engineered, but wouldn't that defeat (or at least hinder) the purpose of the heat sink? Maybe there is enough space to let air flow to cool the heat sink.