Caribbean Beach Resort, for sure. First of all, they have the best pool area out of all of the mods, IMO. They have 2 pool slides, one of which goes through a cave, and they also have a really neat waterpark-like splash & play area for younger kids.
Also, the rooms at CBR are much nicer than POR. To be fair, we've never stayed at POFQ but we stayed at POR last September and had 2 rooms, and both were in major need of a rehab. Peeling paint, rust in the bathrooms, a musty smell, broken lightbulbs...just not the best experience. The grounds are beautiful, I will give them that- but I think the grounds at CBR are pretty, too. We've also stayed at CSR and while the grounds are beautiful there, the hotel just doesn't have that Disney feel to us.
As far as food goes, I hate the food court at CSR- just don't like the way you order & have servers (& have to tip) at the Pepper Market (unless they've changed this in the past couple of years.) The food court at CBR was nice, big, and the food was pretty good. POR had a decent food court, too- no complaints there- we just liked the atmosphere of the CBR better.