I've flown Y+ precisely once in my life and it happened to be in seat 30A -- what a coincidence. It is in the 2nd small PE cabin, I think the rows went from 27 to 33. It is a good seat. Y+ itself is an interesting product (better than AA short-haul F or BA short-haul J Club Europe, as a point of comparison, but not really competing with QF's long-haul J). I suppose the price point makes it successful.