Since you have a 12 year old with you, I would probably opt for the King Suite at RPR. If it were just the two of you, I'd choose Portofino Bay. I have stayed in both of these rooms. The deluxe room at Portofino Bay is VERY nice and the bathroom is unbelievable. However, the King Suite at RPR will give you two rooms - living room with sofabed for your DD and a separate bedroom with king sized bed for you. It is nice to have the living room for relaxing and watching tv. The bathroom in the king suite is nothing great. Just a small bathroom with the sink and counter outside.
Both of these resorts are beautiful and I don't think you can make a mistake.
Have fun!