I've got a macbook air and a thinkpad. I use the air much of the time but quite often I just need to get my FreeBSD fix on in spectrwm. (Yes, you can run spectrwm on OS X but it's a pita and XQuartz makes it much more difficult). Most of what I do on the thinkpad is C hacking.

I tend to approach operating systems with a BSD mindset: use what works for you, and if you have a complaint - put up with some code.