Get BSD and get on with your life. Server software from FreeBSD, DragonFly BSD, NetBSD and OpenBSD, along with desktop software from PC-BSD can simplify your life. Install it the way you want, and it works out of the box. Plus, you can do whatever you want to do with it for as long as you want.
For server software, here's an easy way to get started - the latest BSDCG MultiBSD DVD. For a modest sum you get:
- DragonFly BSD 3.4.2 - includes the HAMMER filesystem
- FreeBSD 9.1 - production ready, serving millions
- NetBSD 6.1 - highly portable, clean code often used in embedded systems.
- OpenBSD 5.3 - where secure code is Job 1