I bought this for my brother for Christmas, mostly because his partner has a 9 year old daughter and I thought they he could play with the kids. The sight of him on boxing day with a furrowed brow, pouring over the instructions, but not letting them beat him will remain with me forever and puts a smile on my face whenever I think about this toy. Even worse for my brother is the fact that he works in the car industry.
I chose this particular set because it has a lot of different models and comes with a motor, so it has pretty much all you need to make something worth making whilst learning a few engineering fundamentals at the same time. The manuals could be a little clearer, but this adds to the fun in my opinion and it should be remembered that this is a toy and not an exercise in poka yoke (fool proofing) perfection - after all what would be the fun in that.
To sum up, meccano has moved on a long way since I was young, it has improved in quality and there is a lot more creativity in the models. A good toy that teaches some engineering.