We've stayed at both. They are both great, but if anyone in your family has significant allergies or asthma, pick YC. BC pipes a scent into the lobby and some common areas that a lot of people love, but to which I am very allergic. Our stay there was pretty miserable for me, because the more I was exposed to it as the week went on, the worse I got. DD has allergies and it irritates them too, but not as bad as it does me. It does not affect DH at all. We love YC. We go over to BC for the marketplace, but I still can't stay inside BC more than about 10 minutes without getting totally congested. Another benefit of YC is that the buses go there first and then over to BC, so if you are heading to the parks at very crowded times, you are more likely to get a seat and not to have a bus fill up before it gets to BC.