Can't comment on the others, but the BBX is great fun. I believe the Kyosho Dirtmaster is also retro-styled buggy, but made with modern plastics and will hold up well to bashing/messing around (not stupid jumps off concrete skate ramps). The other classic Kyoshos are apparently lovely buggies to build and drive, but maybe a bit more expensive for just messing around?
Can't comment on the others, but the BBX is great fun. I believe the Kyosho Dirtmaster is also retro-styled buggy, but made with modern plastics and will hold up well to bashing/messing around (not stupid jumps off concrete skate ramps). The other classic Kyoshos are apparently lovely buggies to build and drive, but maybe a bit more expensive for just messing around?