Awesome posts so far. I've written a TR here about EY F on the IAD-AUH route on the 789 so I'm interested to hear your thoughts about that product.
So true about the lack of the EY Studio reviews...I was supposed to fly J on this route, they had an equip change, so I moved my flight to still fly on the 789, but ended up having to book F. Still intrigued by the J product