My favourites have been:

-Road: F3, IndyPro 2000, USF 2000

-Oval: NASCAR (usually Class C Trucks), Dallara iR-18

My brother reached Class B road this season, so we plan on trying out the LMP2 Fixed.

I miss Dallara Dash at Laguna Seca. It was absurd letting rookies race that car on such a challenging track, but also a ton of fun.