Hi Stuart,
We've flown twice with them - and are flying with them again on our next trip. We have found them to be quite good - transatlantic legs much better then the internal flights, though. I suggest you visit their website. It gives you all the details of the type of aircraft used, and the in-flight entertainment provided on them.
We flew transatlantic from Manchester to Philadelphia on both previous trips. Aircraft used were Airbuses. Each passenger had their own seatback TV screen with choice of films which you can pause, rewind etc. The website gives details of the current month's films.
Only point to add is that on our last trip they asked if we were prepared to delay our travel for 24 hours; in exchange we were given free overnight accommmodation at an airport hotel, dinner and guaranteed business class seats for the next day. Also, they gave us $400 each as compensation.
It has spolit us though. We found economy class a bit more uncomfortable on the way back, after having such luxuries as free champagne and multi-adjustable seats which almost reclined to beds on the way there!
Julie