Just flew on this seat last week...PVG-DFW on a 787-8. I chose seat 5A in advance. This is my second time flying on this seat (772+788) and I love it. This most recent time i was seated on a standalone seat and once on a paired seat. Thankfully the motion was negligible on the latter.
Really unfortunate that the seat didn't workout after all. It's SOOOO comfortable in the bed mode and I LOVE the pre-programmed zero G position. Much more comfortable than the Super Diamond seats that are taking over. Not going to lie, i even find the seat more comfortable in bed mode compared to other top business/first class seats out there that need a mattress topper to be somewhat comfy. This zodiac seat doesn't need any of that!
And yeah, regarding seat 5A, you have just one window and it's pretty far away. Thanks to the huge 787 windows, you can still see out but you're a good distance away from it. I'm scheduled to fly on this product again with my friend. We'll be seated on paired seats (3/4A). We'll see how the motion is then!