As of right now, the cheapest rate is the Super Savings rate online. I called and checked and as of yesterday it is cheaper than both. It may change later down the road, but if it does they will adjust your rate if you call them.
If you book, make sure to check out the Loews site and get the super savings rate online, if you prefer to call, then call the reservations and ask what the cheapest rate is, the rate they give you is more than the super savings rate so you have to tell them the rate and they will give it to you.