Just got back from a 4 segment trip on United Airlines paid by UA miles; flew on 777-200, 757-200, 737-800, CRJ-700.
Of course, I did a lot of comparing UA with TK. Lot of the stuff you are already familiar with, TK has better food for free, better hard product and such.
I will just mention the most striking ones:
-UA mobile app works incredibly well. It is up to date with your flight no, gate info, seat map, upgrade list, standby list, airport map, boarding time, what regulation number your plane is and where is it now, arriving when...All great stuff.
-Difference of IFE options on these flights; On a one-hour long 737 flight, there were individual screens on Y, but you had to pay even for flight map. And if you did not, you end up watching commercials all flight long. I just turned mine off. On the 777-200 there were no screens at all, but a place to put your own handheld device. On the 757 there were individual screens, we had free flight map, movies, and audio and such.
-On the 757, 5 hour flight, they had Business Class lie flat seats and service, Economy Comfort with better pitch which also had meal service and Economy had food for purchase option. Seat plan for this type is 28J/42Y+/72Y. Only a small portion of the plane is dedicated to Y pax.
-It cost me 12,500 Mileage miles to fly 3000 miles one way with one-stop via SFO. First segment IFE did not work, second segment at SFO delayed 3.5 hours due to fire situation there and UA immediately offered 7500 miles to compensate for both mishaps. I don't care about IFE anyways, but the delay was long. I just ended up drinking more at the lounge
So, 3000 miles long trip on UA Economy ended up costing me 5000 miles. Just Wow!!! By the way, if I wanted to purchase, Y ticket would cost me $800 round trip for this flight. That is why I choose to fly with miles.
TK has to learn from how UA handled this IROP so swiftly. (Irregular Operation)