Red hat 7 with all of the bug fixes downloaded and KDE 2.0.1 added, as well as Mandrake 7.2. Here's my take: I have tried Suse 7, and it just would not work with my GeForce 2 MX card, nor my YMF-724 PCI sound card. I gave up on it. Mandrake 7.2 has the best install program I have seen of the three. recognized all of my hardware straight away, without any downloads, tweaks, etc. Red hat required a download from Nvidia, and some minor tweaks to get the video working properly. Once they are up and running, my preference is toward Red Hat, but that may be because I have more experience with it. Better documentation in red hat as well, IMHO. Drake IS faster however. the theory that drake is optimized for pentium and above machines seems to be correct.
As far as red hat 7 being buggy, I think that is mostly hype. There were two real problems with the installer and the compiler that I ran into, but the bug fixes offered work well. As far as the number of bugs, I noticed that Suse, mandrake, and red hat all have about the same number of fixes and updates available on their servers, and many of the fixes are the same in all three distros.