Both great resorts! Pop would be our Value choice. We've stayed there twice and enjoyed it, once as a couple and once with kids. As a couple we barely spent time there, just used it as a base to sleep. The kids (and us) loved the vibrant Disney theming and general busy-ness of the resort. When we switched to POR during the same trip the kids wanted to go back to Pop

We chose CSR over Pop last time due to
free dining (UK) and loved it! bigger rooms were a plus and although CSR is bigger than Pop, it never felt as crowded - possibly due to the proportion of guests staying there for conventions. We never felt the resort was too big - we stayed in the Cabanas, and had a few minutes walk either to the Dig Site or El Centro. Bus stop 4 was our closest stop, buses were never as crowded as the buses at Pop or POR - again maybe down to convention guests? Pop still gets my vote for 'best bus music' though