Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
You can try both BA and QR, but I expect that QR will offer the superior service. (The longer TATL flight on QR is probably a plus too: more chance of getting a full night's sleep.)