I have never heard of Pop being a moderate value resort.

It has the same size rooms, the same type pools (no hot tubs, no slides) and the same dining options. Its always listed as a value on Disney's site. Its a great resort but to me it has nothing above or better than the All Stars.
The moderates are ideal for kids and all of them have arcades, themed pools with water slides, bike and boat rentals, playgrounds and CBR and CSR have beaches.
We like the values fine but the moderates are what works for us (and we have stayed deluxe). Its definitely a personal thing that varies from family to family but for us here is why we prefer moderates:
Lusher landscaping.
Full service restaurant at all mods but POFQ.
Quiet pools (and I know the values have quiet pools but for us they are not that quiet). POFQ does not have quiet pools.
Frig standard in each room. We need a frig and that $10 per night at a value cuts into the savings.
Extra space in the room, not a huge difference but enough to feel some breathing room for the four of us!
Larger bathroom with double sinks or in the case of CSR a long bathroom counter.
All mod rooms have the privacy curtain. Only certain rooms at Music and Sports have them, none of them in Movies do and Pop is getting them post refurb. With teens, we need that privacy curtain so its nice to know that no matter what mod we choose, its there.
Quiet. The common areas in a value are always bustling (and that can be fun) but our experience has been the moderates are less hectic and noisy.
We will stay in values again when the finances warrant it, but we will always pick moderate if we can.
As for offsite, it just doens't appeal to me. We like the option to get the
DDP or QSDP, we enjoy having Disney do the driving and we enjoy the customer service Disney provides regardless of what resort level you are staying in. Exra Magic Hour is another thing. We don't do it everyday, but at least its there if we want it. If we stayed offsite, I'd be buggers knowing the parks had hours I couldn't take advantage of!
OP: If you pick POFQ you will have a compact resort, a great food court, fun main pool with a slide, the boat to DTD, larger bathroom with double sinks, and you can use all the facilities over at Riverside since its POFQ's sister resort. So you will have something like 8 pools to choose from total, two hot tubs, two water slides if you desire to swim that much! POFQ is very charming and well themed and very relaxing.