I personally wouldn't mind the trek to DOH on the A321, the QR cabins have a great seat pitch and i believe they're to be configured 165Y and 12C so far from the maximum dense capacity they can offer.
Excuse me but perhaps my worst flight experience was in a 10 across economy B777-300 CDG/SIN whilst one of my more pleasurable flights was in a 9 across economy B777-200 MNL/AMS.
After all the B777 was designed and planned for 9 across seating in economy, only the penny pinching airlines are squeezing in 10 across seating making it damn uncomfortable for the people that pay their salaries.
So go guess who one of the latest penny pinching airlines are to squeeze 10 across economy seating in to the B777's?