The smallest of the 2H2017 Technic set is, in most aspects, a pleasant surprise. I was expecting something dead simple, but got something ambitious and complex instead, with a brilliant steering system and 2 boom functions that can be easily motorized. Additionally, I like how normal and realistic it looks compared to 42070 and 42069. It's a pretty, functional, well-designed set and it's delightful to steer.
On the underside, 42068 contains literally zero new pieces or pieces in new colors, leaving you little reason to buy it - chances are, you can build it with the pieces you already own. And some parts feel like a few corners have been cut.