Hi, I have started the search to buy a Z4 today. I did not enjoy it.I am looking for either sterling grey or black 2004 or 2005 model.Any body who could recommend or sell please let me know.Of course good condition and a reasonable price is always better. I have seen the one in Naza 300K over.I did not understand it, but supposedly there is a reason. Please email me gk2030@gmail.com