I voted for CCS. It's probably the most perfect anime series out there and right now it's one of my all-time favorites. I like the plot in it the best, all the characters are likeable, there are lots of interesting sub plots, and there's even a love triangle. I think love triangles make romance more interesting and I was actually dissappointed that there was no love triangle in Tsubasa, at least not yet, anyway. Tsubasa is good too, but it has too many things in it that I'm a little unhappy about.