The 34D-configuration as I understand it is:

Door 1 and opposite it the galley
Rows 11, 12, 14, 15, 16
Door 2

Since the 34D is pretty much an unknown quantity I don't think there too many people are up to speed with which are the best seats yet. I'd avoid 11G and 11H because of their proximity to the toilet; otherwise I'd say that all the other seats are equally as bad as each other (or good, depending on your perspective).