I'm forced to agree on the BizElite seats. When pressing the LAND button and the seat reclines all the way, I couldn't get comfortable. My back had an ache in any sort of position, and even trying to stuff a sweatshirt on the bottom of my back didn't work.
I discovered it was much more comfortable to bring the seat up to about 2/3 recline. Then I positioned myself sitting up, and snoozed comfortably for an hour until breakfast.
As for coach, I rarely recline. I find that it makes no difference in my comfort, and no recline increases the enjoyment of the soul behind me.