Has anyone used the iPad app with both the Premiere and Roamio? If so, did you notice any performance improvements between the Series 4 & 5 experience. It seems that some of the media/content is coming from TiVo servers, so I'm thinking there may not be a difference. I have just used my iPads on a Premiere XL. Would like to know if this could be yet another reason to by a Roamio.