Unless you have drawers full of various manufacturers' jaws, what advantage does it confer? Is it sort of like guys new to the game who talk about constantly regrinding their tools rather than learning how to use them as they are, a search for instant ability in the steel, rather than developing technique as a turner?
There's considerable overlap between manufacturers in the types of jaws they provide, because form does follow function. Pick a manufacturer and follow along. Pick the one with the greatest variety at the outset, if you think you want to buy a lot of jaw styles, but by all means learn to use the ones you have well before you make the decision to spend more money to get a different configuration.
Consider that a tailstock and steady can often give you more hold and versatility than another pair of jaws.
