Gilly:
Thanks for the input. I bought a used ML first to see if that's what I would like! It was a cash purchase and the 500 will be too, and they know that. So there's that card too, although I would hope they treat everyone the same. Yes, there is no shortage of MB dealers down US 101 from Santa Barbara where I do business! So far I have no complaints with the dealer there! Thanks again!!

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David L