Sounds like you have made your mind up for the tower. We've never stayed there, but we have stayed at POR several times. We loved the theming of the AB section with it's winding tropical pathways and small bridges. We felt like we were in a tropical jungle, LOL. They have quiet pools inside each section which are fantastic. They are usually really quiet without many people in them with lovely surroundings.
We loved The Mill QS restaurant's theming and the large section of good food. There is HeeHawBob's show in the lounge. The resort store is huge and has everything you want. Wandering around the grounds is fun and the Mansion section has manicured garden like settings. There are carriage rides you can go on which go up to POFQ and around the Mansions.
We love the boats to DS which we go to at least 2 or 3 times while at POR/ POFQ.
It all depends on what you like. We have stayed at CSR before and it was nice, but we didn't like the conference like atmosphere. If you love that atmosphere, then the new tower might be just the thing for you. Good luck