I will be buying a used Model S in the nearish future. Im on the EVCPO website everyday just to get a feel for pricing. I know a ton about the Model S because I've been obsessed with them since they came out. It is the coolest car ever made. One of my obsessions has me watching this guys YouTube channel "RichRebuilds." In general he bashes Teslas a lot, but I enjoy his point of view, and he's entertaining. He gives a perspective that I don't normally see as a Tesla fan. Anyway, he has/is rebuilding salvaged Teslas. The reason I mention him is because I heard him say not to buy a model S built before 2015 because of the build quality compared to vehicles built after 2015. No idea how true that is, but I have no other frame of reference, so I will take his word for it? I know what features I have to have (Smart Air, Pano Roof, Dual motors, HiFi, ideally P85D.) So does anyone have any advice as to which model/year/features I should stick or or stay away from while I do my search?