I have been considering for awhile now whether or not to move up to a 85. I currently own a early vintage (3/2013) MS 60 with only 14,000 miles. I've discussed trade in options with Tesla, and have also looked at selling my MS 60 privately and either purchasing or buying a new MS 85. What I have not yet considered is buying a used Tesla MS 85. Any suggestions? Also, where is some places to look at available MS 85's for sale?