I have to agree with CPH-Flyer above.
It was one of the more comfortable economy products I've been in... which I think it was the feeling of spaciousness due to the one less seat rather than the actual seat size. (787-8 to BOS in my case).
There definitely was more room owing to the slimmer seat + pitch combination and number of seats across, but being a 12+ hour flight, getting up every once in a while was still a necessity for me.

The premium economy product isn't bad either, though I suppose that would depend on your budget and what the price difference is on your route.