I had the same feeling for years until they started making battery and memory and harddisk changes impossible. I got the chance to buy 10 second hand x220s with a bunch of unused 6 and 9 cell batteries. They give me the same feeling as you have about the quality, I run 15+ hours on them with the 9 cell, they are very cheap (I paid $80 per piece), they have excellent keyboards, they perform well for all I need them for including the latest webgl demos I have seen and, something unexpected, I cannot do without the trackpoint anymore. What a waste of muscle movement the trackpad is once you get used to the trackpoint. All a matter of taste but it also runs well enough as hackintosh and, what I like better, I can do iOS dev using OSX on qemu including installs on iOS.

Edit: but agreed, if you need a trackpad, the mb(p) beats all. The x220 trackpad is a piece of garbage and I disabled it right away.

Totally agree. I decided to get adventurous a while back on my last laptop upgrade and went with a Dell XPS 13. It had so much potential, specs were great and it felt sold but at the end of the day it won't run macOS and win10 was just not a great dev experience. Switched back to a Macbook pro after less than a month when the screen died on the XPS and it took Dell about a month to fix it.

This. The trackpad is just about the only thing keeping me on apple hardware these days, but it's a much bigger deal to me than I'd have ever expected. It seems they are the only company that can figure out how make a mobile pointing device that doesn't make me want to throw the computer at a wall.