I have stayed at POFQ and Coronado, and spent time with family staying at POR. My thoughts are, go with POFQ.
Coronado Springs
Pros:
-Nicest Pool area of these 3 with a great theme
-Nice walk path around a lake
Cons:
-Food court sucks, I hate everything about it. Most expensive, convoluted process, and below average food
-Theme of the resort's exteriors are not really up to Disney standard IMO. It looks tacky.
-Very spread out, could be a very long walk to lobby area
POR
Pros:
-Serene atmosphere for walking, nice setting
-2nd best pool of these 3
-Good food court
Cons:
-Theme is boring IMO. While the setting is pretty, the buildings don't really do it for me personally. However, if you are really into a natural setting this might be your favorite.
-Has to share busses with POFQ often and you will not get a place to sit
-Spread out and could be a long walk to lobby
POFQ
Pros:
-Best theme of all the moderates. Very close to Deluxe-level theming both on building exteriors and lobby (better in some cases)
-Compact, walkable...easy to get from any building to the lobby or bus station
-Shared busses always stop at POFQ first before hitting POR
-Good food court
-Live music at night in the lobby bar
Cons:
-Weakest pool of these 3