BN and BSB are not next door to each other. The walk is about 25 minutes along the beach. However, Beaches runs a free shuttle between the two resorts so, walking isn't necessary. The shuttle ride is about five or six minutes, if I remember correctly.

BN has great water slides. Sandy Bay has none. Don't know about BB.

The Beach at BN and BSB are both great beaches in great areas. However, as nice as BSB's beach is, you can walk for a longer way, in either direction from BN.

The beach at BB is very, very small compared to BN or BSB. In fact, I think it is small compared to most good beaches.

The last time we were at BN was in Jan. 2005. There were quite a few people that stayed at BSB and used the facilities at BN daily. These two resorts cannot compare to each other as far as amenities. In my opinion, BN is definitely the better of the two unless you are looking for a quiet resort with a great beach then, you'd want BSB.

If money isn't a problem, I would go with a lesser room and go to BN especially if you have children older than toddler age.