uh, Seat is very well known for being very unreliable and by far the most unreliable brand of VW concern, Skoda is decent but pretty bad value against Koreans, if you equip Skoda same way as Korean you end up for sure on higher price. Japanese in general cost slightly more, but it's worth it for better engines, high quality, low risk of stealing and decent resell value, while Seat has zero value
I can't really imagine someone in US butting any of brands you mentioned, Seat is pretty bad deal even in Europe