I got the modern one because I prefer Copper and I don't really like how the classic looks. I'm not even really a fan of how the modern looks either but the first time I saw the classic I was just like... nah.
I like Copper and the Modern look (even though it does look like a can). My police station is right next to my town hall, so once I change that to the modern look it will look nice.
Modern, for nostalgia from the Gamecube version and because I like Copper the best.
Booker is fine but I never liked him all that much, and to me, the Classic station stands out far more than the modern one.
I chose Modern because I prefer Copper over Booker. I am creating my town to be a "modern Japanese village" with Japanese architecture and modern conveniences
Since this is my first Animal Crossing game, I chose the classic one just because it looks better! I know I've never met Copper, so my opinion on the matter doesn't mean as much, but I really like Booker's personality. He seems so timid and self-conscious. It's adorable, to me at least!