Something that I didn't notice being mentioned is that CBR's rooms are a little bigger than the other Moderates. It was the first Moderate resort built, and the room size was decreased a little when they built the other Mods. Also, CBR has had the most recent room refurb of the Moderates (I think), which is nice, too. We have stayed in Jamaica several times, and love that location! Good choice
I agree with the comment about CBR bus transfer times being similar to POR, makes sense since both are similar sized resorts (aprox 2000 rooms). POFQ is half the # of room as CBR & POR, and has one bus stop - however, they may still share buses with POR for part of the day. I'm not sure if this has changed, but they used to share buses until 4pm, then after 4:00 there were separate buses.
It is personal preference of course, but I think POR has the best food court of these 3. But, CBR has such a relaxed, Caribbean vibe and a great pool, I still love it, and would not hesitate to stay there again.
Hope you have a wonderful time!