A 9 page comparison of these three distros for anyone in the market to check out something new.

To sum things up, if you like a system that has a good base and aren’t afraid to use the command line to administer or build packages, Fedora is a good choice. If you like to have all the applications you use readily available, nice utilities to administer the system and a single website that you can go to for help, Mandrake is a good choice. If you like a polished, easy to configure system with additional corporate support, Suse is a good choice.

So it looks as though you might be better off installing all 3 distros and using the different features of each when the urge arises. That way you won’t feel bad about leaving anyone out of the mix.