We are drowning in lego but ds9 still wants more. So far we do not have any lego technic and I have seen the lego motor function set which I think may prove more of a challenge. Can any one recommend some not too pricey models and does any one know which sets will take the motor functions. He is very keen on the idea of the motor functions but I am not sure whether they fit in all the models. There will be serious tears if I get this wrong.