I'm finally seeing laptops and notebooks being sold without Windows pre-installed. This is moving me to consider buying one.

My questions are: which flavor of *nix do you use on yours? Is it tolerably well-behaved? Reasonable utilities readily available for it? Any pros that would tempt me, or cons I should be aware of?

I use Solaris at work, have never used any flavor of Linux, but realize this is an area I really should get familiar with. Thanks for your thoughts on the matter.