I believe they all have their weak points, some have more weak points than others. The difs on the Kyosho is a fixable item and can be overcome with patience and proper setup. I think the big downfall with the K is the chassis is too short. There's an aftermarket stretched chassis but from what I have read elsewhere, Kyosho is developing/testing a new extended chassis of thier own. Also Kyosho's are just pricey in most kits and replacement parts. Something to consider is most truggies, whether RTR or kits, really aren't designed as bashers. They can take a beating on the track but take them out in a construction site and what not and you'll find it to be a different story.