I think it really depends on the woman. If a young woman marries an old rich man, that is generally frowned upon, but if a old woman marries a rich old man then it is considered true love. It works visa versa too. If a young woman marries a poor young man, then it is considered love. But if a old woman marries a young man, then it is considered cougarism.
Society is interesting, huh?
Personally, I would go for the dying rich old man. It's not because of the money, but older men tend to be more mature and they make better conversation. I especially love listening to stories of how things were before I was born. ^_^