I'd go with choice 2
Choice 2 -
Front Left / Right - B & W 683
Center - B&W Center
Rears - B & W 683
Subwoofer - Velodyne DD-10
Receiver - Pioneer Elite SC-35
My Uncle has the B&W 683s for HT and they sound great. He also liked using the B&W 683 speakers for multi-channel music. His sub was Velodyne as well but I don't remember the exact model. It wasn't the DD-10 though. It was one of the lower models.
Good luck
Choice 2 -
Front Left / Right - B & W 683
Center - B&W Center
Rears - B & W 683
Subwoofer - Velodyne DD-10
Receiver - Pioneer Elite SC-35
My Uncle has the B&W 683s for HT and they sound great. He also liked using the B&W 683 speakers for multi-channel music. His sub was Velodyne as well but I don't remember the exact model. It wasn't the DD-10 though. It was one of the lower models.
Good luck