I have had both the older and the new Kaos ARF's. I liked both real well until I was offered more money than they were worth. I have flown two different Easy Sports and there really is a lot of difference between the Easy Sport and Kaos. The Easy Sport is a milder plane and can fly slower and is not as quick but is still very smooth if set up right. The Kaos starts where the ES leaves off as it seems faster and quicker but still slows real well and lands slightly faster..
This is just my opinion from my own experience. The Kaos could be a second plane if set up with mild throws.
Fred B