Wirelessly posted (BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
The OP's choice comes down to: 115,000 AA miles for a oneworld award with no fuel surcharges; or 100,000 BA miles for two one-way awards and several hundred dollars in fuel surcharges.