Over my last several trips (pre pandemic), I stayed at Pop. As someone mentioned above, the rooms are recently refurbished. I am staying at CBR this trip and while I like the location slightly more than Pop, the rooms (at least in my location - Martinique) need to be refurbished pretty badly. No, things are not bad. But you can definitely see the age.
Pop and CBR are easy access to DHS, Epcot and AK. Going to MK probably takes the longest. You didn't indicate if you would have a car or would rely on the WDW transportation or Uber/Lyft. I have a rental car, so getting around property isn't very difficult. I have driven to DHS several times with no problem. My one AK day was easy. Going to MK is another story. When you drive you have to park at the TTC and then ferry or monorail over. I just didn't want to deal with the buses this trip. Getting to Epcot has been easy with the Skyliner, which you can also use for DHS.
Ultimately look at pictures of the rooms and find the aesthetic that feels right for you. This is probably why I prefer Pop over CBR. I just like the look and feel of the rooms at Pop over CBR. Would I stay at CBR again? Probably if I had a great AP rate.