I just stayed at Reunion last month and LOVED it. We were only there for a 3 day weekend and wished we could have stayed longer. We had 3 kids with us ages 2, 3, and 5 as well as 4 adults (me, DH, brother and SIL). The units are really really nice. HUGE! Very upscale furnishings, 3 ginormous full bathrooms. The water park was a big hit with the kids. I have stayed at both BC and Reunion and really did love both. BC obviously has the Disney location but if you're not going to be doing the parks Reunion is just as nice if not nicer. It's quieter, more laid back, more spread out. Even if you are going to Disney the drive was surprisingly quick out the side entrance of the resort.
My only complaint was that there were no hot tubs. I couldn't believe with a resort with such nice pool facilities that they forgot the hot tubs. Also, while each area had smaller pools nearby, which we did not visit, you had to drive to the main pool. At BC the pools are steps away. Okay, so really two complaints...