Was in 10D and liked the softer seats but man, at 34 inches that is a tight E+. Really makes it hard to work on a laptop. The 700s say they have 34 inches also, but they feel a lot bigger. I usually fly 700/145s or 777 due to being in Denver and taking overseas flights. The 737-800 I flew down to MCO was huge in E+ compared to the 319 on the way back.
The 319 has to be my least favorite plane. Horrible upgrade chances and really uncomfortable to try to work, even in E+.