I have an MD1600.
What are you going to use it for? I bought mine used as a toy to clear snow, if I was actually planning on earth moving I would buy an old Caterpillar D2, if I was going to need an excavator I would purchase a older takeuchi mini excavator or find a used Magnatrac with an excavator. They are fun toys, the larger ones could probably be used to move earth, but where I live we just have rocks and clay, which would just destroy a magnatrac if it was used to push a bunch of material.