My husband and I don't have kids, and we stay at Port Orleans French Quarter every time we go because we find that it's the most adults-without-kids-friendly of the moderate resorts (and we actually like the food court there quite a bit; we've always felt it's comparable to Riverside). It's nice to have a peaceful place to come back to after being in the parks all day. No restaurant onsite, though, other than the food court, so keep that in mind if that's a preference for you. We always have a car with us, so it's easy for us to go to other resorts for meals if we want. We've never taken the bus or water taxi, so I can't speak to how convenient that is. But we love POFQ, and rarely stay anywhere else.
We've stayed at Coronado Springs in the past, and while it's also relatively quiet and a very nice resort, I agree with Jimini that it's a LOT of walking if you stay there.
As far as the value resorts, last year my sister, her husband, their two kids (both teenagers), and my 80-year-old dad stayed at All-Star Music. My dad said it was like being in child he!! for the week they were there (he didn't pick the resort, my sister did), and he was never so glad to leave a place in his life. Even my sister admitted she would have liked a place that was a little less hectic.
On the other hand, my brother and his family (his wife and two daughters, late teens and early 20s) stay at Pop Century all the time. All four of them adore the place and wouldn't stay anywhere else, but when I wondered once about trying it instead of POFQ, my brother advised me against it, since he knows my husband and I like our resort more on the quiet side.
So there are some pros and cons for you--hope this helps you make your decision!