I tend to like both types of stocks, actually, depending on the gun. I'm really going more for cosmetics with the stock than functionality in this case, although being able to load in a large 9.6V battery will be a big bonus too.
I see myself using my C8 more in the field, so I want that big stock from the 416 on that instead. I love its shape and size over the Marui stock. I may eventually just get a crane stock for the C8 and return the 416 stock to its rightful gun too.
Oh the possibilities when it comes to modding Armalites!