Originally Posted by
Goldorak
I believe you are talking about Seat+ because Eco+ and Premium Eco usually refers to the same product.
If yes, this is the Quick Change" config. The answers to your questions are basically yes to all, but PE comes with additional perks (including SkyPriority) and more miles.
Damn, thanks Goldorak
To bad I did not check it before because for a 4h flight there is no value in this.