I use Xandros that comes pre-installed with Eee PC and I find it far better than the Linpus version of my friends Aspire One. Remember that I am not comparing the two machines (i.e Eee PC and Aspire One) but the Operating Systems.
Netbook performance or normal desktop performance?
If it is either, preference is penny a piece, there is just personal preference that divides the distros, unless the other Linux gurus knows of some underlying features that is enable in either distro to make it top the other?