I always referred to it as "the dog turd" effect, it's what monkeys see and monkeys do, I still prefer a 4 bar car, in my humble opinion it is easier to setup, and a load cheaper to repair, as far as how quick one acts compared to the other, you can use hollow bars, which have a lot quicker action, than a std solid bar, I like to run one of each across the rear, as well as the front. Bob