Join Date: Sep 2005
Location: HEL
Programs: AY Platinum, TK Elite, BT VIP, AA, BA, SK, DL, NT, WB + hotels
Posts: 8,757
For me, the most valuable perk in AY+ is upgrades. Be it with points or vouchers. If I was OWE with another carrier, I'd lose that perk and I'd need to buy J tickets each time I fly longhaul.
What benefits does OWE with BA bring you, except the privilege to book tickets that cost several hundred euros but don't earn any points?