Just had the multiple drain/fill procedure done using valvoline maxlife. My mechanic called valvoline and verified it was approved for use in my A5S 440Z transmission. Also replaced the transmission filter, o-ring, pan gasket, drain plug and cleaned pan and magnets at the same time. The drain and fill was done 3 times while running the car up to speed in various gears between changes while on the lift.
My car has almost 59,000 miles. Before the change, I had noticed hard shifting during hard acceleration and a slight bit of jerkiness/clunkiness when initially putting it into drive. I definitely notice smoother shifting after the change. I wholeheartedly disagree with lifetime fluid.