Well, I flew the reconfigured A330 to and from Florida this weekend in J and PY. First impressions... pretty good!

For J, it's basically an improved version of the 777/787 seat, just with a bit less space. Overall I wouldn't say it's any better or worse than those seats, unless traveling in a pair and selecting D/G seats, where the flexible divider is great.

PY is just better than that of the 787/777 all around. More storage, better screen, more comfortable seat (and especially headrest)... not a whole different league, but definitely a step up. I'm 6'1 and had no problem getting comfortable and sleeping, even without a pillow or blanket.

Obviously, Y is a lot better than on the Boeing widebodies, especially for those travelling in pairs.