I flew the 321XLR in row 21 (front-most row in Y) to DOH last week. A little better than 29 (exit row) but not by much. Aisle is too narrow and during meal services the rear two toilets were out of service as the crew had to park their trollies in front of them, leaving just one usable lav for all of economy. Not enough space and not a good experience. Sure it's better in J but my 515€ upgrade bid failed.