I use Linux every day and more often than not, it's Fedora based. The first linux distro I tried was Red Hat 5 and I still remember installing it multiple times in one day in order to gain a better understanding of Red Hat Linux. I stayed with Red Hat Linux right up until the last free version Red Hat 9. It was a superb release but marked the end of such releases from Red Hat and also the beginning of a new, more open, more co-operative (with the community) and more frequently updated operating system called Fedora.