Originally Posted by
MapleLeaf93
Note that on the 737-900, as well as the 737-900ER and 737-MAX9, the starboard side has noticeably worse seat pitch in Main after row 17:
https://www.flyertalk.com/forum/33580906-post27.html
So if seat pitch is a concern and you get stuck in non-PC, non-exit Main, your best bet is the port side in rows 18-32.
Ooh that's good to know. I usually select 17A/F when I book my ticket and either fly there or get moved up to Premium/F. Can't think of the last time I sat in real coach on a 739.