If and when we can, and when the rate ends up being the same or lower than a moderate, we rent DVC points for a deluxe studio.
Otherwise, we love the moderates. They are wildly overpriced (as, in my opinion, are all Disney hotels), but the queen-sized beds, double sinks and privacy curtains/screens (perfect for me, the early riser, to get up and start getting ready for the day without disturbing my sleeping DH and 2 kids), in-room coffeemakers, and extra square footage in each room (especially the extra elbow room around the room's the table and 2 chairs, which we utilize for an in-room breakfast each morning) are all amenities that we use and appreciate every day of our Disney vacation.
As much as I'd love an even bigger room and better transportation to at least one park (as in the deluxes), those particular perks don't justify the price difference for us.