Add me to the list of no recliners. Aside from being inconsiderate to their person behind you I find a reclined seat to be more uncomfortable. The other day I had the one open seat on the plane directly behind me (well, semi-open: an oversize pet carrier that wasn't noticed during boarding was placed on the floor against the window as that was the only "safe" place for it) so I figured I could recline guilt free. After a minute or two I went back to regular configuration as it was making my back hurt and I suddenly remembered why I don't bother to recline.

I'm half way to A- so far this year and I so far still have not been on a new interior plane. Came close a few weeks ago but a last minute change put me back on a regular -700. A trip to Boston next month shows a new -700 and a -800... for now.