I hear you brother, I manage medium size business which has a $50M e-commerce site and about 1000 franchised employees. We use RHEL5 for our e-commerce systems, and dev machines. However for the hosting systems of our dev boxes we use CentOS. About the only thing that makes RHEL worth paying for is the guarantee of backported fixes (we're held to PCI DSS so we need it to stay sane).