This one is about neck and neck with Watt OS5 as far as me liking it. Runs great on older machines and for a newb like me the changeable interface lets me change it to look like XP. I give em' [Watt OS 5 & Zorin 6 Lite] a 9 out of 10 rating.
PS: Zorin was one of my first stabs at Linux and I still like it.