Surprisingly good
Whilst I'm not in any way affiliated with Cineak, I stumbled across this discussion and thought I'd toss in my 2 cents worth. I had never heard of Cineak until I came across their stand at CEDIA 2011. I've been slowly putting together my home theatre for about a year now, and have been frustrated by not being able to find seating that was both comfortable and that fit the decor (which is predominantly slotted acoustic panels). I saw this chair and knew straight away that it would fit in visually, but sitting in it was something else. I don't know how it works, but the mechanism as you recline just seems to find a position that leaves you "floating" - hence the zero gravity. I agree about the headrests and acoustics, although it does come in a large and small version, so I guess you chose the size of chair that doesn't cause you those problems. Not cheap, though (and obviously not everyone's cup of tea as far as looks go, although bypassing the stitching changes the look substantially).