9S turned out very cute and well-made.
The paint job is good, and the sculpt is very detailed (you can especially see the fine craftsmanship on his clothes and his sword). All of the parts fit perfectly and the seams are not at all visible. Even though he comes with only two face plates he is still very expressive and highly posable thanks to many accessories. The machine life form and the pod are also quite movable. Both their hands and legs have joints and the plastic seems sturdy enough so it doesn't feel like you'll break them if you move them. You can easily interact with them and even make a scene for a photo shoot.
All in all, 9S is one of the best nendoroids I have in my collection and he wasn't even that expensive.
I hope to buy 2B too one day. :D