Just wondering peoples opinion: I have the following options for a used Model S purchase through Tesla. 1) 2017 Obsidian Black 90D with 31k miles on it, autopilot 2.0, premium upgrade package, upgraded sound system, sunroof, premium vented seats, 19 inch wheels. Good photos but there does appear to be a warning signal lite up on top of 17 inch screen (?may be nothing but don't know). 2) 2018 Midnight Silver Metallic 100D with 17k miles on it, autopilot 2.5, premium upgrade pkg, upgraded sound system, glass roof, air suspension, dual chargers, cold weather pkg, premium vegan seats, 21 inch sonic carbon wheels. Good photos throughout and no warnings. If they were close to even I'd go with the 2018 100D in a heartbeat - just a little prettier car, my favorite color, and better battery, etc.... However, the 2018 100D would be 14k more expensive than the 90D. I know that a lot of this is personal preference - just wanted to know if people had a good argument that would support me paying more for the 100D (realistically, I can afford either - just 5 year buy vs 6 year buy).