Xandros 2 is not out until the 16th.
A few things I know:
1)SuSE has everything but the kitchen sink on 5 cds, xandros is only 1 (+ 'tech preview'). That said, xandros is debian based, so it is easy to put a line or two in the sources.list and you are off.
2)Xandros has nvnet built in, so nforce2 boards work w/o any problems.
3)The new cd burning program in xandros is the best that I have ever seen on any platform, the only thing it does ot do is an md5 check after burning.
4)If you have used xandros 1.1 in the past, the new layout is much the same.
5)If you have hardware that is sometimes marginal driver wise (like an 802.11b card, scanner, etc), I know xandros spent a lot of time trying to cover as many of these as possible.
I find kde unresponsive in suse 9, in the past I would have said xandros is the way to go, but since switching to gnome, I do not mind suse at all.