Some of you may wonder, easy peasy(1.5), UNR(9.04) or Xubuntu(9.04). Which one's better for your laptop/netbook?
First of all, I'm gonna tell you about Xubuntu(9.04),
It is a very fast OS because it's a low CPU consuming DE. Now if you have a brand new computer(desktop or laptop), don't bother with Xubuntu, Ubuntu'll be just as fast. But if its an oldie (like my old deb machine), get xubuntu, It'll run at a good speed and then you can finish off nicely what ever life there is left on it!
If you have a big-enough screen then UNR 9.4 is good, because it can have the default desktop(if you switch, add gnome-panel and gnome-wm to startup or, well, you can find out for yourself!)
So, all that in simple terms is, xubuntu for old(ubuntu for new) laptops or desktops. UNR for new netbooks(the new one's have OK screens) and easy peasy for out of the box performance on an old(or new) netbook.