Julian I was only refering to the way in which they weigh less and hense arent as hard to transport plus if i had said they were dam hard would it encourage people to think about building one?

But dont worry I wasnt meaning it to sound as if they are so easy that it is just a case of putting together a few batteries and motors and your away. Any roboteer that comes up with a robot demands respect merely for the fact that they built something within the weight limit and rules, and if it is effective, then fantastic.