I just got off a flight from PTY to MIA on a the older version 738. I was in 5F for 15 minutes* and was really pleased with the huge amount of leg room and, since there is a 12" high cutout in the wall, I was able to put my bag under the business seat in front of me. The leg room was fantastic.

I had been a dedicated exit row flyer for a long time, but I have converted. I really like being in the front of the plane.

*I was only in it for 15 minutes because it turned out I got a battlefield upgrade.