I hate when people act like everything below Vista Ultimate is watered down...its not, the software is different to suit your needs. In a business environment and need to implement certain group policies? Get Business or Enterprise. Need enhanced security? Get Enterprise or Ultimate with BitLocker. Just need an OS for music, movies, and games? Get a Home edition.
The reason they charge extra for Ultimate is because it comes with BitLocker, don't need it? Don't pay for it. Its like if a copy of Vista came with Photoshop and was $650 more than a copy without it, would complain that the other version is watered down?
Ultimate IS worth the extra money if you are going to use the extra software that comes with it!!! Dreamscene and Ultimate extras are not the only things separating Ultimate from Home Premium!
EDIT: Never heard that Ultimate is gamers choice...but I know that some people always have to have the best whether they need it or not. Heck, Home Basic will game just as good as Ultimate.