FreeBSD hands down. Stability, security, and speed. The new Linux kernel is supposed to be faster by some tricks or some such, but I have not had good luck with stability and Linux especially under heavy load. I prefer the FreeBSD philosophy as well. Linux is, by its very nature, chaos incarnate.I'm getting a new server and was planning on going with Fedora Core 3 and plesk. But it was just suggested that I maybe consider FreeBSD and DA. Never even heard of DA (about to look it up) but being a Mac user I must know a little about FreeBSD.
So if you had a free choice of OS and control panel what would you go with and why.
FreeBSD is fast, clean, and well-supported. Best server OS I've used.