I'm looking to buy my first Tesla. The top end of my budget is $50,000, so my choices are either a new Model 3, or a used Model S. I like the idea of getting a brand new car (with the entire 4-year warranty AND the tax credit) but I'm worried that it will be a little small for my taste, and that I will miss the display in the dashboard. I also think a new Model 3 will be quicker 0-60 than any Model S that's in my budget. In terms of the Model S, I prefer the body style of the 2016.5 and later, but price-wise I think all I could afford in a 2016.5 would be an S60 RWD. Aside from body style, are there differences between the 2014, 2015, 2016, and 2016.5 Model S?