Yes the new A330s are very popular with customers. I was lucky enough (through a friend) to fly Premier to JFK about a month after one of the new a/c had commenced. It was pure class, however EI premier seats are much like the Air France business class so EI didnt go all out for a nice new product.
The main problem for me is that there is way too much of a difference on the ta routes. I flew back from LAX on EI-EWR, what a ****eheap! Came into service in 1990 as their first -200, and its a disgrace as a long haul a/c. No PTVs, and in the main econ cabin 3 drop down tvs. Seats are like a piece of a log! Compare that with -DAA or -LAX and the new one -DUO. Would it not make sense to upgrade the interiors and IFE on the older a/c. May only be a short term thing but you cant treat customers like this in the long run! Oh hang on you can, this is aer lingus.