In particular, the middle of our index is populated with some extremely affordable performance machinery, which can be every bit as involving as cars that cost double or even triple the price. Perhaps the most exciting thing about this list is how it’s set to grown in the coming months. With cars like the Scion FR-S/Subaru BR-Z, Ford Focus ST, and Hyundai Veloster Turbo all set to arrive before the end of 2012, there should be no shortage of affordable involvement options.