As a child I loved Lego, and always wanted to try Lego Technic, but felt it was maybe a little too advanced for me at the time. So now, at 38 years of age, I finally feel ready for it :-)
I bought this model and, upon opening the box, found two instruction booklets - one to make a buggy, the other a tractor - and three bags of Lego. The box could have been a lot smaller to be honest, but never mind. I decided to make the buggy first. No tools are required, and unlike "normal" Lego the pieces are all very different - there are small studs of a sort to link pieces together, some gears, plastic rods, wheels and so on. The instructions are reasonably easy to follow, every step being illustrated, the parts colour coded, and where two pieces could be mistaken the book provides a 1:1 scale drawing of the piece so you can hold the parts against the diagram to check. True, there are a few fiddly bits, and it is baffling at first as you assemble a few parts and wonder when it will finally look like the picture on the box, but it gradually takes shape.
After two hours or so I had finished building the buggy, and I was delighted with it. The completed model is pleasingly large (30cm long or so) and has lots of moving parts, such as suspension at the front and rear, working steering (there is a cog on the roof of the car which operates the wheels, but you can also move the steering wheel if you have tiny fingers), a hinged roof section, tilting seats, and an engine (note that the model isn't powered) where the four pistons move up and down as you push the car along.
How about the tractor? This model also took me a couple of hours to build but, on completion, I didn't think it was anywhere near as good as the buggy, plus there were a couple of small mistakes in the instructions. The tractor has working steering, and a two cylinder engine (not motorised). As I didn't like it as much as the buggy I immediately dismantled it, rebuilt the buggy - which didn't take anywhere near as long the second time - and was once again a happy, if tired, boy.
Could this be the most fun I've ever had with £25? Possibly! Unreservedly recommended for children (9-16 years, the box suggests) and 38 year-olds feeling nostalgic. It's completely brilliant, and the buggy is now sitting on my bookcase... when I'm not playing with it, at least.