I was a few days short of my deadline. Couldn't decide. My main concern was years one and three are pretty skimpy. Nothing too expensive there, but there was an unknown. If I just did even years with Tesla at today's prices it would cost $3200 over 8 years (plus inflation which probably would bump it to $4000). The unknown element was the filter replacement. So I called the parts department and asked "how much is the filter in the new Model S with biodefense mode"? The answer came back $193. Gulp. Just ordered the ESA.