No, that's the only meaningful difference. Actually, if you like SuSe you may want to download Open Suse 11. That way you will have the current version. SuSe is one of the many Red Hat based distros and it is a good one.
For one it means you get direct support from Novell since they own SuSe now. It also means that paid engineers and developers work on it, not the open source community.
The open source version has nothing to do with Novell, Novell just supplies the source code and then tosses a few dollars at it and lets the community do the rest.
I have used SLED before and it is not a bad distro.