I own a Kyosho tki2 and have driven a Mugen mbx6. As far as the way they drive, Kyosho wins hands down..... Way easier to drive! As far as gripes about the Kyosho, the front shock tower bends easy and the car/parts are expensive. That's it! I ran Associated for around 3 years and when I made the switch to Kyosho my lap times dropped significantly. Around a second per lap.........