OH my gosh, we must have twenty different threads on this exact same topic, so maybe a search will give you hundreds of opinions....
To me, it completely depends on your party and your needs. I personally won't stay anywhere BUT POFQ anymore. But others swear by PORIV.
POFQ is half the size of any other resort at WDW -- its small size means that even the furthest rooms are no more than a 5 minute walk from the food court and the busses. All of the rooms have been refurbished. Even a few years ago, it was the best kept secret at WDW -- mostly geared toward adults who enjoy the romantic location, the adult amenities, and the general quiet ambiance. The last few years, that secret is out, and it's filled with groups, families with multiple strollers, and is generally always packed now. It also is generally the first bus stop (sometimes the busses service both resorts) so you can get a seat.
PORIV is huge -- it sprawls all over the place and many of the rooms are distant from the foodcourt, pool, and transportation. It is however gorgeous. It has more activities for kids, and recreational options for the family. The river winding itself through the resort is lovely. The food court is larger and seats more people. The entire resort is beautifully designed. Only three buildings have been refurbished so far, though.
That being said -- the rooms at both resorts are virtually identical. No matter what they look like on the outside, they look the same on the inside as every other room at the resorts. No differences there between the two resorts. They both have transportation to Downtown Disney via boat, which is lovely. It's easier to get a seat if you stay in PORIV, depending on the time of the year. It offsets the terrible bus service that RIV has to the theme parks. The busses are plentiful -- but they are always completely packed to the gills.
In general, if you are traveling with adults only, POFQ is the better option. If you are traveling with kids, PORIV is the better option. They are both physically lovely.
