The out-of-the-box support for joining an AD domain through YaST makes openSUSE the obvious choice when I need Linux and Windows systems to play nicely with one another. No other distro that I've tried comes anywhere close.

Hell, no other distro that I've tried offers anything really comparable with YaST in general, AFAICT. It's why openSUSE w/ Xfce is my go-to for migrating folks off Windows desktops (especially XP).