Current RH9 User: RH ES or WS?

I currently use RH9 and see that I will have to make a choice soon about
what to go with.  From a price point standpoint, I am inclined (if I use
RHEL) to use the WS flavor.  However, there are certain apps within the ES
version that I would need to add, e.g. DHCP, VSFTPD, etc.

Can I use the WS flavor and download/install what I need, e.g. vsftpd?  Do I
have to go to the developer web sites to get what I need, or will these be
available from RH?  If the packages I want won't be available (for the RHEL
flavor I choose) from RH, what is the impact of going to the developer web
site of a particular app and downloading/installing?

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Mike McCandless
[email protected]