We have stayed at CBR (3 times), POR and CSR. We have visited POFQ but haven't stayed there.
We love the moderate resorts.
The following is my opinion of each:
POR - Fantastic themeing. Spread out but very quiet and relaxing. Main pool and private pools throughout the resort. This is very nice because you don't have to swim at the more crowded main pool. In my opinion, the best food court on Disney property. Location is good. Not far to MK, Epcot, TL and DTD. Boat transportation to DTD. Recently refurbished. The Alligator Bayou section of the resort does have rooms that have a trundle bed so if your fifth family member is small enough, you can fit five in one of these rooms. Only moderate to have this feature.
CBR - Very good themeing. Spread out but very quiet and relaxing. Main pool and private pools throughout the resort. Good food court. Can see most of the Epcot fireworks from a lot of the resort area. Largest rooms of all of the moderates. Recently refurbished. Not far from Epcot, TL, MGM. In my opinion, the best location of all the moderates.
CSR - Themeing is OK. Didn't like it as well as the others, but that is just my preference and nothing to base a stay there on. The best main pool of all the moderates. Also has private pools throughout. Has a gym to workout in if you enjoy that. I didn't care for the food court. The food was good, but it seemed like more work than the others. You do get some table service for drink refills and a 10% gratuity is added on to your purchase for this. I didn't mind seeing conventioners, but the lounge/bar is right next to the food court and they aren't seperated by a wall or anything else. Everytime that we were down at the food court, the lounge was full of conventioners that had been drinking and they were very loud and talking like drunken sailors. Not what I wanted my 9 year old son exposed to. Location is close to AK, BB, MGM. In my opinion, the least convenient location of the moderates, but not by much. It wouldn't keep me from staying there. Newest of the moderates.
POFQ - Haven't stayed here but visited several times. Nicely themed. Not as spread out as the other moderates. Much smaller resort. Nice main pool. Doesn't have the private pools like the other moderates. But, you can walk over to POR to use their pools. This seems like a hassle to me. I have heard really good things about the food court, but have only walked through it. Never eaten there. Does also have the boat to DTD. Location is right next to POR so has the same advantages and disadvantages. Recently refurbished.
I do wish that the moderates had queen beds. They all have full beds. The rooms might be a little cramped for them though, except CBR since their rooms are a little bit bigger.
Now, as much as we love the moderates, we have rented DVC points the last two years, OKW and Saratoga Springs. Rooms are bigger and get queen size beds and some form of balcony or patio. I love the resorts and they are one of the best things about my trip. We got both the OKW room and Saratoga Springs room cheaper per day than the moderates.