I loved the x-series, and recently got a new x201. The screen is phenomonally bad. The viewing angle is so poor that if I'm watching a movie on it, there is nowhere I can position it so that I don't get funny colouration on the blacks. Until then, I'd had a dream run with this series. Check your screen quality before getting an x-series...

The X220 with the IPS option is a nice screen:

http://www.the-hikaku.com/pc/lenovo/ThinkPad-X220.html#displ...

Seconded. It comes within epsilon of having a 180 degree viewing angle both vertically and horizontally.

You should look at the screen on the Z--it is much better than any screen I've seen on any laptop. For reference, I got the cheaper 1600x900 screen; it is exactly the same resolution as my old, cheap 17" laptop.

I can comfortably edit two documents side-by-side in Emacs, on a 13" screen! It really is perfect--anything less would be really annoying now.

For 12 years I bought nothing but Thinkpads. For myself, for others, for employers ..

It's a workhorse.

I love my x120e, and it doesn't need quotes around the word ultraportable.

I think the quotes are there because "ultraportable" is a nebulous marketing term rather than because the X1 is difficult to lug around (which, assuredly, it isn't).