I actually carry both a Palio carbon fiber and a Xikar X2. I tend to use the Xikar more often, but I've found that the Palio will cut a larger RG than the Xikar. Since I tend to smoke smaller RG sticks, I carry the Xikar in my shirt pocket.
I like them both, and use them both some nights. Either way, they are both quality cutters.
I also have gravitated towards Xikar, especially for lighters. I really like their "No questions asked" lifetime guarantee, for everything they sell!
I have a cigar box full of old torch lighters that no longer work.
Another thought is the Xikar cigar tool / scissors. Greg Dunn (Dunng) had put together a group buy for these a while back, and a lot of inmates really like this item!
Have fun deciding!