OT: OS choice for dedicated server

[Tim]

I know this is OT but I highly respect the opinions of people in this
group.  I am probably moving my dedicated server to a new provider
soon and I have a few choices for OS.  My current dedicated server
is on FreeBSD 4.10-STABLE and my Intranet box is on Debian Linux.
Both have been stable and I am comfortable in either environment.
I run strictly server software (apache, php, postgresql, mysql, qmail,
etc.) and no desktop stuff.

Of my choices below, what would you recommend that'll be suitable
for the next 12-24 months.  Out of the list below, I am really only
familiar with FreeBSD 4.10, so comments/suggestions about the others
would be greatly welcome.

Cent-OS (Redhat compatible Linux I think)
Fedora Core Release 1
Fedora Core Release 2
FreeBSD 4.10
FreeBSD 5.2.1
FreeBSD 5.3

Thanks!!!

Tim
PS: Hopefully by the time I need a new machine I'll be able to run
DragonflyBSD in production.