POFQ is by far my favorite resort, and the only one I stay at anymore...
POR is better if you have younger kids in your group as it has more activities for them.
POFQ is better for adults and older teens. Although over the years, they have tried to make it a bit more family oriented like showing outdoor movies on warm evenings on Beignet Square...
As to the busses that is COMPLETELY dependent on the time of year you go and the resort capacity level...There are times that the busses go ONLY to POFQ and never go to Riverside....and there are times that they go to both. Usually, POFQ has dedicated busses to Epcot and to Magic Kingdom all morning long (they share busses back from all the parks except MK). The busses are dispatched by a strange mathematical paradigm and are different almost every day. That being said, I have never had a wait longer than 10 minutes for any bus (except Downtown Disney which runs every 30 minutes) and that is in 14 plus stays at POFQ.
They do slow bus service during the afternoon, especially between 12 - 3, and then the bus service is heavy on returns from DHS and AK from early afternoon onwards as people leave those half-day parks and head back to the resorts to regroup and start park hopping for the rest of the day...That can mean, at times, that you have increased waits at the resort between 2 - 4
The Boats to DD are also completely dependent on the time of day and the time of year....they run about every 10 minutes most of the afternoon onwards...but if you wait until 6 pm to go down to DD for dinner, you will find that both POR and POFQ can have long waits for the boats. Go an hour earlier at 5 and you will share the boat with 20 other people from both resorts combined...like everything else at WDW, if you don't want crowds, do good time management and go down an hour earlier...
I highly (but reluctantly) always recommend POFQ to my adult friends -- reluctant because it used to be quiet and low capacity and now the secret is out and it is always full...