I flew out to PHL in 1K. Plane was rattly, felt very plasticy and cheap, and the noise from the galley of opening and closing cabinets was a bit annoying (though that was specific to the seat location).

Ended up asking to move to vacant 5K in the lounge for the return, much to the surprise of the desk lady. An American lady was walking past and had heard the conversation and asked to have my 1K!

I'm just probably too used to the 777. I do like the 787, and never experienced the "cheap" (my opinion) build quality of the 350.