You will find some annoyances with Redhat: 1. support will stop at the end of March, 2. the successor named Fedora is still very buggy, 3. It doews not mount at all NTFS partitions right out of the box- needs kernel patching, 4. The software installer is a pain, compared with Debian's apt-get (best out there) or Mandrake's urpmi.
SuSE is very good of course, but if you want "the whole OS"without spending money check Debian- Sarge is 2 DVD's (or 10 CD's) large and downloadable for free. Else Mandrake 9.2 is somewhat buggy, but good overall and the installation is by far the best/cleanest around.