For kids crawlers are a good idea.. Truggies , MT's etc are too fast and crazy. I personally prefer the craziness and speed, and always rolled my eyes at crawlers. I recently played with one though, crawling over a course I made in the yard out of old wood and boxes etc, and it was good fun. It's a more relaxing type of RC fun, and better around small kids IMO... The Axials look cool, and as far as I can tell, are the standard..