At WDW, you always get something for your money - so to speak. Whther that difference is worth $800, or whther you wish to spend $800 more is entirely up to you.
Both are nice resorts. Both have excellent pools. BC has a lsighlty better swimming area, but CBR's was recently made over completely, and it's really one of the best on property. The water slide perhaps is not as dramatic as BC, but at BC, if youwant to use the lazy river you have to pay for a float. (so few folks do). Also, for a lazy river, it is very deep. The CBR has the only 'cool water' tub (like a hot tub but cool water) I kow that sounds confusing. It has jets like a hot tub, but cool water is preffered by some folks. The CBR pool also has like a mini water park/pirate boat thing. It's pretty neat.
One of the bigger differences is the location. BC rooms will be bigger, and the resort has more elabotate decor - like fresh flowers inteh lobby. CBR is more spread out - so you spend more time walking between buildings. It also has exterior corridors. Those aer great inspring, but can be less nice if it's pouring rain.
CBR has by far a better food court. BC has better table service dining.
BC is very close to both Epcot and HS. You walk or take a free boat to get to either. It is not especially close to MK or AK - those you go by bus, which often stops at the next door YC resort. At CBR all Disney transportation is by bus. The bus makes - I think - five stops around the resort. So a bus stop will be fairly close to your room - but it takes a while to make all those stops. You also lose a fair amount of time walking between the food court and your room. It can be as long as a 10-15min walk! That's not to say BC is compact, it also takes some time to walk around BC - but it's not as far apart as CBBR CBR, and CSR have a LAKE in the middle of their campus.
At BC - you can - however- walk around the lagoon to the Bwk, YC, Swan and Dolphin resorts ( Actually you should also look at those. They are not owned by Disney, but are RIGHT in WDW. Sometimes you can get them for moderate room prices, you just can't get
DDP or ME.) That area has some QS options, but has a healthy number of Table service restaurants which are excellent. You are also very close to the BACK entrance of Epcot - so the World Showcase restaraurants are within walking distance (It's a little ways to MExico and Canada and Noway - about 20-25min). Also, if you are going to go to Epcot for several dinners, you may want to get park hopper passes to take advantage of them. But it's nice when your resort is SO close to teh park. CAtching a bus to a resort at park closing can take an hour or longer to get allthe way back to yoru room. BC puts you within 15min of walking to TWO of the four parks.
IF you pick BC, and you are going to do the diing plan, I do suggest you make erservations at some fo the many fine places over that way. ESPN, and the brewpub areTS, but they don't tkae resoervatiosn (only walk up ) which can mena a wait, but also gives you some freedom.
If you think you'll mostly be doing QS dining this trip, then CBR may be the way to go. The food court has numerous choices.