I do enjoy Cardcaptor Sakura, and I'll always have a soft spot for it as it was the first manga I collected...
But, I'm personally enjoying Tsubasa a lot more. Mainly it's because, as Ruby Chan said, the interaction between Kurogane and Fai is just so funny, I want to keep reading it see how their relationship will develop.
The storyline is enjoyable too, and although Syaoran and Sakura seem a little paler to me this time around, I still love them...although I think Kuro-tan and Fai might steal the limelight a little bit, no matter what CLAMP does. Haha. But, yeah, I still love SxS, and it's lovely to see a whole plethora of CLAMP characters all together. <3
So, yeah. Tsubasa = Love.