[CentOS] Recommended REPO Setup for Desktop on Cos5

CentOS is simply great.  I use it as my main desktop.  I use VMWare 
clients for any "special needs" software.  I am struggling a bit with 
the plethora of repos and looking for some advice.

Would you opine with detail on the best repo setup for a desktop CentOS 5?

Comments:  rpmforge provides fine rpms.  kbsingh, google, adobe, 
kde-redhat, CentOS-Testing , CentOS-fastrack, epel, ATRPMs also provide 
fine RPMs. epel seems to have some stuff that I have not found on the 
others (like gnucash), but enabling epel worries me about conflicts with 
rpmforge et al.  I recalling hearing about priorities and protectbase 
yum plugins.  My thinking is someone has mastered these issues and I 
could copy their setup so I could do a "yum search whatever" a "yum 
provides whatever", "yum update", etc without having to enable/disable 
repos or includepkgs/exclude packages in the repo (i.e., "just work"). 
I realize one size won't fit all, but your recommendations/thoughts are 
appreciated.

-- 
Sincerely,
John Thomas