I flew one of these back from JFK at the weekend, in WT+ (or "Higher Class" as my 10 yr old likes to call it!). Was very impressed with the IFE system, super responsive, nice screen and the new moving map is just awesome (OK, I'm easily pleased).
It was only WT+, but because there were only 4 rows or so, and it was half empty, it felt rather nice.
Al.