As for me, I'm a big fan of the CAO Brazilia line, like everyone else, and I particularly like their bigger vitolas, such as the Amazon and the Ipanama.
I've had one of the Criollo (the Mancha, I believe), which I thought did taste a lot like a Cuban (as CAO intended it to), but mine was tad bit harsh, otherwise with great construction and draw.
The Gold line just wasn't for me. It was billed as a mild line, but I thought it tasted more medium-bodied. It was alright, but kind of bland and plain compared to CAO's other selections.
I had a L'Anniversaire Cameroon one time, but I can't quite remember what it was like. I think it was good, but it still doesn't stand out in my mind...guess I'll have to smoke more of 'em.
I just had a L'Anniversaire Maduro yesterday, which I loved and I will definitely try to get more of in the future.
Next on my list of CAO's to try is the eXtreme, the Black, the Odyssey, and the new Mx2!