[alfanick]

If you want absolute power - Lenovo P50 (though P50s is closer to MBPr)

[jpalomaki]

P50s is just dual-core.

P50 is quite thick, 24-29mm. I'm using T440p and the height is a bit annoying when typing.

In addition to the missing quad-core slim models, another annoyance with Lenovo is that at least the online configurators are still offering just 512GB SSD. It is of course possible to throw in what you want, but if it is not official Lenovo stuff, then it is not covered by the onsite warranty.

[wyclif]

I used to be a big ThinkPad guy, but I'm spoiled now. The thought of having to work with a Lenovo trackpad depresses me.

[dom0]

Use the trackpoint instead? Honestly the trackpoint on TPs has been a major, maybe the biggest, deterrent for me to abstain from ultrabooks.