If we weren't trading in our 2014 Town& Country, we quite possibly have considered the Pacifica more seriously. As it was, the T&C's refinement level soured our taste for Chrysler products. I was trying to keep an open mind about the completely redesigned Pacifica, but my wife was adamant against it, unfairly as it might have been.
That said, I do like the Pacifica better than Odyssey/Sienna. The Stow-n-Go 2nd row were the bee's knees and worked fantastically for our needs with 3 kids. Most often, we fold one 2nd row seat down, which opens up ingress/egress no other vans can match. The fold forward 2nd row seat in our Sedona SX, while not as trick as Stow-n-Go, come closest to matching Chrysler's utility. As far as reliability is concerned, the T&C was excellent too, which is more than I can say about the '04 Sienna we had. Pacifica's suspension is markedly better than the clunky T&C, but still not as refined as the Sedona.
Styling wise, the new Sedona beats all other minivans by a long shot. We cannot stand the last 2 gens of Odyssey, they just get weirder and weirder. Sienna is not bad, but getting a bit long in the tooth. Pacifica is fairly smart looking but, to me, it's a look that just doesn't appear likely to age well. Peter Schreyer has been waving his magic wand at Kia and the Sedona is no exception.
We also much prefer Sedona's SUV-like front row interior. Other than having only 2 cup holders up front, we just like the ergonomics of the high continuous center console, with the shift lever where God intended it to be.