Getting the best price on Axix X51

[csulbxx]

I had just gotten the X50 when the X51 came out-I didn't realize how soon it was coming. I had it (and used it) and I am happy to say that when I sent it back I got a full refund :) Now I want to get the Axim 51 at the best price. After I bought the first one I saw the discussion on price and realized I paid too much. So what should I do? They have the deal of the day at for 20% off ($468). Do I now get one of the $35 coupons from e-bay? Should I also get one of the $100 ones they also have for about $70? Will they let me stack them because I don't want to buy one and not be able to use it. Should I take the deal with the GPS or take the time to look at other GPS?