After 11 years using and working with Linux, I settled on Slackware for my desktop, Debian for laptops.

Slackware because it's secure, stable, and I don't get caught up in all the silly gui changing and whatever that I used to. It's helped me learn a ton and comes with everything I need. Also, I like supporting the older distros.

Debian for most of the same reasons, but a little better support. Plus, it's all free software (with access to non), which I feel is important.