The Cargo was my first CF guitar, the Ox was my second. I liked them both but sold them both in order to move into my preferred instruments, nylon string guitars.

The Ox is particularly nice. It is comfortable, it is a good all-around instrument, it plows the field of music nicely. I sold it to a friend of mine who gave up a martin in favor of the CA. He, in turn, passed the guitar along to his son who is a music prodigy. In short, the Ox has turned into a family heirloom.

I would take an X20 over an Ox but that's a matter of personal taste and an overt liking for Emerald instruments.