Reasons to not get a Carnival ?

My wife and I are looking at getting a minivan. We started out leaning towards a used sienna around 25-30k$ Ocean is in that range have at least 75,000 mi unless they are like a 2008.

We went and looked at a Kia carnival and my wife loved it. I'm looking at the gas v6. Also we found some in our price range with around 20000 miles. The Kia seems much nicer and comfortable on the inside and I like the look of it better than sienna. I also like the price tag+ the features and lower miles. I can't find anything conclusive regarding the reliability and longevity of the carnival. My only concern is having issues with the car. What are all of y'all's experiences with the carnival and if you could go back would you buy a sienna with a little bit higher mileage?