Honda Integras are. I know this is a Clio forum, but I'm going to say it anyway. ITR's blow me away. Just got back from a 350 mile round trip to Yorkshire to deliver a car and these things are just mind-blowing.
I cant think of any engine that ticks more boxes for me than the B18C Type R. Anyway, this was my steed for the day. Advertised and sold within 24 hours.