RPR for us everytime. We have just come back from 14 nights there in August and we truly did not want to leave. It is so beautiful and a very relaxing hotel, whereas we looked around the HRH and PB and both for very different reasons at each did not appeal to us. Not to say they are not lovely hotels, because they are......we just prefer the RP.
But whatever hotel you choose you will not be disappointed. The standards of all 3 hotels are wonderful