We were there last week, did a split stay between a studio at Copper Creek (1 night) and 6 nights in a Boulder Ridge studio. We preferred Boulder Ridge hands down. The BR studio is larger (wider) and we just preferred the decor (plus it is our "home" so may be somewhat sentimental). We had the walk-in shower at CC which was very nice. The bathroom area is larger overall at CC and the lighting is better in the vanity area. There is a sliding barn door which is nice if some are sleeping while others getting ready. We arrived late and upon entering the room, I flipped the light switch and got nothing. We went around and tried all the lights but none came on. DH then used the light from
his phone and found I had flipped the "master switch" which shut everything off. I've never seen that in a room before. We found the CC room a bit less soundproof. We could clearly hear our neighbors' conversation when they returned in the evening. Never heard a peep at BR but maybe we just had quieter neighbors. The only room request was "close to lobby" for the CC stay and we got first floor about 6 rooms down from the lobby facing the BR building.
Our BR studio was also on the first floor, two doors down from the exit to pool next to Sturdy Branches. We really liked this location. The patio at BR seemed larger but I'm not sure it was. I noticed a nice gas BBQ over by the cabins just across from our patio. The living space seemed larger than at CC. I didn't pull down the wall bed, but from it's length, it appears it would easily hold a (not tiny) adult.
Our main disappointment (other than DH having a kidney stone episode while we were there) was the transportation. We frequently had waits for buses of 45 minutes at the resort and parks. We waited for an hour one night at Epcot. There were a lot of unhappy people and I was surprised that they weren't on their "best transportation behavior" considering they are actively trying to sell DVC there. One night we were trying to get from MK to Saratoga for dinner. After waiting 45 mins. we gave up and got on the bus back to the Lodge. We ended up changing the reservation to later (thankfully they had an opening) and took a taxi ($20). I would allow 2 hrs. from leaving your room to getting to your destination for scheduled dining or trying to get to FP+'s on time. The construction near MK seemed to be causing some delays. Most of the buses we got on either back tracked to the campgrounds or went around in front of Poly regardless of which park we were headed to. Several times at the parks we had a bus pull up only to have the driver tell us s/he was just stopping there for some other reason. Often there was cheering when a bus did arrive.
The boat transportation was somewhat better. We went to MK a few times and to Contemporary a couple of times. I once arrived when the boat to Contemporary was just pulling away, and it was over an hour before I finally made it there. They do have a larger boat now going to MK which holds a lot more people, but still have some of the older boats as well. We saw a couple with a
scooter have to wait for another boat because they were told it couldn't go on the small boat and had to wait for the larger one. I felt really bad for them because it seemed they had already been waiting a long time. If you have a scooter, I think you might be better off with the bus for transport to MK.
Long story short, both CC and BR are nice, but we preferred BR for the size, location, and more traditional lodge feel. Allow yourself plenty of time for transportation whenever and wherever you are headed.