I like movies that make you think. "Arrival" does require a bit of heavy lifting but it is all worth it. Beautifully shot with a very strong performance by Amy Adams -- what a year she had.
Wasn't a big fan of Sicario but with this one Denis Villeneuve proves he is one of the best directors working today: "Enemy", "Prisoners" and "Arrival" (not really looking forward to Blade Runner 2 but will watch)
"Arrival" is a sci-fi like no other, recommend it highly