These small model sets were on sale at Argos during 2010, and I purchased a total of four units, one for the useful parts and three for the models. They are all very easy to build. One is a buggy, one is an excavator, the other I believe is skid-type shovel vehicle.
Each one could be reviewed in detail on its merits and issues and I am proposing to publish a review in coming months covering each in detail then.
The writer feels they are very attractive little models; easy to build, robust, and not unduly expensive at the time of writing.