I experienced the new seats last week. I think they are really good and well thought out. The increase in leg room is impressive. Also, seatback storage,the smaller tray table and the wire cup holder are spot on and very sturdy for short flights.The old leather seats had a tendency to make you slide forwards.
Flying with Ryanair this week I was able note the difference. New aircraft but knackered tray table so any drinks would slide off,no storage space and leg room poor compared with Jet2.
Jet2 cabin staff are also much more attentive and good humoured.
Some of the Ryanair cabin crew are a bit thick.