QF operated A380 which can’t hold a candle up to the new AY J product
It is an individual preference thing, having flown both, I say give me the QF J seat on the A380 anytime.
1. QF J on A380 has nice storage on the window, plenty big enough for a decent size handbag/satchel and shoes and all the bedding. AY J seat has a tiny storage area, which will fit a laptop or amenities bag only; meaning you have to put valuables in the foot well or overhead bin.
2. AY J seat does not recline, so you have to have the agility to maneuver yourself into the lay flat position; and choose the seat carefully if you are a side sleeper as the angle means you can only lay on one side or your back. QF J seats have automated recline, so mobility isn't an issue and you can sleep on whatever side suits.
When its time to return to seated position on QF press a button; plus there are handles (on side table and on back of seat in front) to help you stand up. On AY its all smooth surfaces and rounded edges, no handles so it is difficult for anyone with knee issues (i had an injury and couldnt fully bend my knee) or who is elderly to pull themselves up to a seated position. There is literally nothing for you feet to get purchase on or for you to hold to help pull yourself up.
No moving parts is good from a maintenance pov, but hard work if you arent as agile as you once might have been.
3. Seat belt is fine on both when seated. But when you move to lay down on AY, you use a different sash belt and its retractable and quite tight across the hips. This makes rolling over difficult, unless you reach down and pull the belt first. On QF you can made the lap belt a bit loser because it isn't retractable and have no movement issues whilst flat.
4. The seat cover on AY doesn't attach to anything its is simply laid on top of the seats, as you move yourself into the footwell it doesn't always stay where it should. QF cover attaches to the seat so stays in place better. AY seat is also firmer (but you prefer that).
5. On AY only 2 options, seated bolt upright (with no lumbar support except a tiny pillow) or laying down. On QF there are multiple setting in between these 2 extremes, if you like to recline some whilst watching TV. Speaking of which the AY tv is fixes position, when laying down you cant tilt it to make viewing more comfortable from that position.
I slept better on QF J seats on A380/B789, BAs new B789 seat and even on BAs old J config.
I think its quite polarising seat, I could never recommend it for anyone older. I would still fly AY J; but if there was another choice that worked Id likely go with that. But I understand why a younger person may love it.