I don't think you can make a wrong choice,I love both resorts! However, I picked Pop not because I think it is so much better than Movies but it is newer. The All Stars are wonderful! But Movies is the only one not to have a refurb yet of its rooms. They are the older style rooms still with the smaller tv and older furniture style. Once Movies gets its refurb (and I am sure it will) then that will make it my first pick for a value.
Now if you had asked between Music and Pop I would have picked Music since its refurb is totally done. Sports I think is mostly done with theirs.
In the end however, its about the theming. If you have a member of your family that loves Buzz and Woody, 101 Dalmations or one of the other themes Movies has then that is the one you should in all liklihood go for! If its all about Jungle Book or Lady and the Tramp, then go with Pop.
The rooms at all the values are identical in size and amenities, the food courts and busses at all the values are equal in my book. Right now I just think that until Movies rooms get some new touches its my final pick. But its still a wonderful resort. And heck, I am not following my own advice, we are staying at Movies for one night in October so clearly I am not too worried about the non refurbed aspect!