As for the OP, I have a 2010 Routan SEL. I like it. I previously had a 2009 SEL Premium that I drove to death, and miss a few of the features on there the SEL doesn't have. Downgrading is no fun. LOL
Fun fact is that DGCs and T&Cs had options not available on the Routan. A fully optioned out T&C had the most stuff available. I bought them both used and they were the best deals around for what I was looking for, so I can't regret it... But in many ways I wish I had been able to get a T&C. In terms of features they're really the ultimate for these vehicles.
If I were you I'd focus less on the model year, and more on the mileage. You don't NEED a 2019 or whatever, they're the same vehicle. Find a super low mileage T&C from the last couple years of production and it'll blow doors on the newer DGCs, AND it'll probably cost you less money. I've never understood why people will pay more for a newer model year... The mileage is what really matters. Rubber and gaskets can go bad on older cars that weren't driven much, but if you're not comparing a 3 year old car to a 25 year old car it doesn't really matter. Buying a few years further back with comparable mileage for less money is where it's at.
If I ever get another van of this generation I'm definitely going to hold out for a T&C from the last couple years of production.