For the ORBC aircraft, I prefer the 330 vs 773 mainly because the 330's seem less worn out than the 773 and the fact that it's a 2-2-2 configuration vs the 2-3-2 (especially on a full J class due to overbooking).

On both aircraft, I find the front/bulkhead seats (rows 11 and 12) have slightly less legroom.