rPath lets you choose rPath or SUSE base OS

http://www.rpath.com/corp/2008-press-release-archive/rpath-suse.html

Under the agreement, Novell will provide SUSE Linux Enterprise, including source code and maintenance patches, to rPath, who will then include SUSE Linux Enterprise in the rPath Appliance Platform. All of the software certifications associated with SUSE Linux Enterprise will continue to apply to customers who build their appliances using the rPath Appliance Platform. Customers will receive support directly from rPath, who will be backed up by Novell for Level 3 support issues.