This is why I stopped trying to "run the numbers". Everyone who posts their rationalization based on numbers has done something different. They all come up with something else. Some break it down by how much each point will cost of the years. Sometimes it comes out as the best deal ever, some times it comes out as the worst.
I bought resale because I can afford it and it is at a place I want to stay with the room types I want to stay in. We don't do studios, so Poly wouldn't work for us.
The other question I have is how can you vacation 3 weeks a year and only spend $1500 on hotels? You can't compare staying off-site to Deluxe. You will never make the numbers work that way.