Hi Everyone. I'm currently looking at purchasing one of the "Mavmount" device adapters. I'm wanting to get one to use a normal size iPad with the controller and also test to see how it works with an iPhone. My query is should I simply look at getting the specific size for the iPad, or should I look at getting the 55-278mm or a specific size? What are the disadvantages of getting the 55-278 and if there are none, then why doesn't everyone just get this rather than specific sizes? Any advice/feedback appreciated! Thanks!