EVA looks like about 6 hours longer. Even if you have a bit more leg room, that's still an extra six hours of being cramped up and an extra airport to get through. Also, I'd rather arrive at 3pm and check into my hotel, spend a few hours looking around and get an early night than arrive exhausted at 10, wait for my room to be available, and struggle to stay awake until a sensible bedtime. For me, UA economy would be preferable. YMMV.