Sienna Owner 
2016 Toyota Sienna Minivan XLE Premium 8-Passenger 4dr Minivan (3.5L 6cyl 6A)
Pacifica is better.......
 I upgraded from the 2012 Sienna to the 2017. The 2017 Sienna was fine/slightly disappointing, until I rented the new Pacifica for a week on vacation and realized how much better it was. The new Sienna transmission makes acceleration noisy and delayed. Which makes the engine seem under-powered, and not as easy/responsive as the 2012. The electronics stack in the 2017 is better than the 2012, but still feels dated compared to other new cars. Everything else is the same as what they introduced 7 years ago. Now just disappointed.