I'm sure royal purple is better than some standard penzoil, castrol, etc... Just depends on the pocket and how often your changing your oil. I don't think a cam would require anything specific. If your changing your oil regularly as in every couple trips I wouldn't bother with the real expensive stuff. Now if your the guy that doesn't maintain your stuff very often maybe it's better to re assure yourself with the outrageous priced quart of oil. Haha.
