We actually prefer the Poly. Rooms are larger and the resort just has a more relaxed, laid back feel. Which is what we're looking for when on vacation these days. We aren't particulary impressed either way with the monorail. As we often have taken the water launch to the MK while staying there. Just as convenient. Remember if your choosing the Poly simply for convenience of monorail you do have to go out of your individual "long house" and walk to the Grand Ceremonial house to acces the the monorial. So again, depending on where you're located and the weather, the convenience of the monorail is a matter of opinion. That being said we love the Poly!
As far as the BC, Storm Along Bay while visually appealing, wasn't my idea of a pool. I prefer a pool to be a pool..and not a beach. It had sand on the bottom. Again, that's just me, some people love that. I also live on an island and can go to the beach when I want...so I don't need to have it recreated, lol! Also just didn't care for how you're sort of on display..while at the pool. ALthough it is gated now..you still have people who may not be guests walking past the pool area to the docks or even walking to the studios or Epcott. I know when we stayed at the BC the resort itself was huge, and we had to change rooms as my mom was traveling with us and had difficulty walking from her room to the lobby area.
While the Volcano pool at the Poly can be a bit crowded, not as crowded as Storm Along Bay, and honestly we prefer the "quiet pol" these days. (it's also one of the few pools on Disney property that is over 8 feet in its deep end) Also if you have younger kids, they will be out of your sight at the BC while going down the slide at Storm Along Bay. (unless of course you go with them evertime, and that gets old quick). Our kids were younger when we stayed there, and I didn't like having to do that.
Rooms at the BC are much smaller than those at the Poly. At the time we were five and while they had the daybed..it was tight. Where as the Poly rooms were HUGE. We have been lucky. Requesting a Garden view in Tokelau with a view of the pool. Very nice..and relaxing. Love the balcony. Be sure you ask for a building that has a balcony or patio, in either resort..some of the balconies are just for standing, or non exisiting. A primary reason we choose a deluxe resort is a balcony..it's important to us. Our rooms at the Poly have been SPOTLESSLY clean. Staff very nice. While the BC is a beautiful resort nice, and we do visit and eat at the Cape May whenever we visit, we choose to stay at the Poly these days. Hopes this helps.
