I've been to all 4 of those types of classes at Iowa Speedway in the past & they were action packed in my opinion. It just a fun track to be able to see the race cars & trucks compete all the way around it from the grandstand seats.
Any of are good to watch. The Trucks tead to bump and bang each other more.
Yes all are good
All of them if you love racing.
Thanks! Your answer is awaiting moderation.