There's this show on animal planet called my Cat from Hell....the one episode sounds a lot like this!
One of the guy's suggestions was adding more cat trees and elevated surfaces for the cat to get up on and away from the others. Makes them feel more secure and less likely to get attacked. It worked on the show, but thats television so who knows. Anyway, might be worth a shot!
It can take up to a month for Feliway to work. Feliway (or what +v+ suggested) is a must in our house. Also make sure that you have enough diffusers for the size of your house.
When they pee on something, make sure you use some kind of enzyme cleanser to get rid of the smell.
Also, you said they were on the china cabinet. Are there any other places they can sit on near the ceiling? It's in a cat's nature to want to be high and look out over everything. It makes them feel in control. It allows them to be more aware of their surroundings. If you find that one of your cats is always hanging out on top of a tall piece of furniture, there's a pretty good chance he's just feeding his natural urges. You can buy shelves and things like that specifically for cats that like this sort of thing. I've also found that they enjoy having a place to lay in front of a window. One of my cats turns into a total jackass if he doesn't have his own space near the ceiling.