For us, it would depend on the cost including any specials. If you want to swim, the pool at CBR is MUCH nicer than Pop.... 2 slides, wonderful theme, and it looks really neat all lit up at night. The Pirate water play are for young kids are great. But if you do not plan on swimming much, I guess that doesn't matter. IF you go with CBR, I highly recommend booking a preferred room... you don't want an extremely long walk in the cool air after swimming. CBR is a big resort.
As mentioned, both CBR and Pop have double beds. It is a bigger room at CBR but didn't make any difference for us just being 2 adults and 1 child. Now, you might consider Port Orleans Riverside.... a moderate that was just refurbished and most rooms have queen beds. We didn't eat much quick service at CBR but I sure liked the Shrimp Lo Mein and other food at Pop.
I like Pop and the Value resorts for all the giant icons and theming. The buses were a little annoying with all the stops at CBR but wasn't that big of a deal.