Depends what you're looking for from your experience.Chaps, is there a massive difference between Priority plan and Ultra? Is it worth having? I'm on Ultra and thinking if down grading is the right move
If your priority is gaming at 4K, or having a boost in FPS from the more powerful graphics card, playing exceptionally demanding games at highest quality or want to have theoretically less time queuing (I say theoretically, since Priority queues have been reasonable), then go for Ultra.
Otherwise if you're fine with the flipside of those main points, happy to play at good graphics settings but perhaps not maximum on some games, and are looking to save some cash, then I haven't seen many local Priority users complaining about their level of service, so you may well be happy there too.