Going back to the earlier discussion about the Burkes' wealth, my feeling is that they are, to use a snobbish British term I particlarly dislike, New Money, meaning they've only become rich in the last 1 or 2 generations whereas the Burgmeisters and Royces are Old Money, meaning they've been rich for many generations.
On top of that, I feel the Burkes are rich rather than wealthy. The difference? Well, to borrow a couple of lines from Chris Rock "Shaq is rich, the guy who signs his paychecks is wealthy" and "Wealth is something you can't get rid of, rich you can lose over a summer and a coke habit"