I've followed the advice to avoid !A, 1C, and gone for 2A, 2C outbound (hoping an aircraft change doesn't then mean !D, 1D appears and row 2 is not the bulkhead ).
On the return, I've taken 1A, 1C as the whole of row 2 is blocked in an otherwise "empty" cabin. Is row 2 for crew for some reason, they're both A320's ?