I have to say, I've been using various linux distro's for the past 2.5 years on my home machine with no MS Windows in sight...
I've test driven the majority of the main stream distro's including Xandros, Fedora, OpenSuSe, Gentoo, Ubunto, Mandrake and Mandriva.
I found Fedora and OpenSuSe to be the most robust and complete up until recently.
I recently downloaded the live cdrom version of Mandriva 2008 (it was for my daughters computer, bless her) and gave it a little test run on my machine (which at the time was running OpenSuSe 10.3).
I was astonished at the speed of the distro, the live cdrom was a 32bit kernel and running from cdrom I expected it to be a lot slower than my OpenSuSe 10.3 (64bit), but I was wrong... in fact it was so much faster that by that alone I had made my mind up to give it a try (install it).
Of course I soon found other things that I appreciated... one of which was/is the excellent 3D effects which are absolutely fantastic on the desktop.
Not only are the 3D effects for the desktop great fun to use and play with, but they're also very stable in Mandriva 2008.
Both OpenSuSe and Fedora 3D effects were not stable, they had my X windows crashing frequently, so much so that I simply disabled them (although the first time I found compiz I was blown away by the effects, but not the stability).
Okay, I think I've given you my message that Mandriva 2008 is pretty darn good when matched up against the likes of Fedora and OpenSuSe (although I still have a soft spot for them both).
One thing that I may not have mentioned is that although I've installed various distro's over the last 2.5 years, I should have mentioned that by simply making sure my 'home' directory is in fact a separate partition, I found installing any distro a breeze... and so if I got bored with the distro or mangled my configs, or even just wanted to try something new... it wasn't any trouble, apart from the delay in waiting for the new distro to install ;-)
I'm glad more MS users are looking at using Linux, and I'm really glad they're talking about it too...
binarybasher