DL does have discounts here and there, but they generally are not as good as what you find at WDW. We find that spending 4 nights in a DLR hotel, can often cost us the same as what we spend for 7 or 8 nights at a WDW deluxe hotel (just FYI- the DLR hotels also tack on $17 a night for parking when you get there if you bring a car, as opposed to WDW where parking is free if you are staying at the resort). DLR is great though. We have developed a love of both coasts. We originally thought we would just make one trip to DLR, I can't imagine giving up DLR now!
The discounts for DLR rooms also seem to come out closer to trip dates than the WDW discounts. Your best bet is to do what a lot of people do for WDW as well, which is just to go ahead and book the room, and then if a discount comes out you can book a new room with the discount and cancel your original reservation.