Just seen that you can get motorised meccano sets for age 4+ - anyone know if they are any good? We've had the standard 4+ meccano before and thought it was quite rubbish - hard for adults to do the fixings up, and parts that break easily. Would we be better off with motorised lego? (DS1 is 5, can do small lego models, I'm trying to get him more interested in lego type stuff.)