We almost always get an overflow rate through Shades of Green (must be military or federal gov't employee). Anyway, we are going in early March this year due to DH having a conference. We will spend part of the time at the Swan (his conference) and the other part at the Poly, just because we love it so much and it is such a big part of our Disney memories. Here's the kicker - we have never paid more than $200 (including tax) to stay there and because we are in Peak season, we are looking at $435 (with AAA). I held out a long time saying I couldn't/wouldn't pay that, but now I'm thinking I might. I would do anything for a rate of $280 at this point!!!
We love the Poly. You can't beat it for convenience to the monorail, convenient parking, electric water parade. Good luck with your decision.