Contemplating ordering a Model S but am having a hard time deciding about which battery to select. My commute is only about 12 miles a day and we may do some long trips but we also have a minivan for that. I am enamored with the extra distance but even more with the acceleration of the 85D vs 70D....but is that reason enough to spend an additional $10K? What are people's opinions? who else had this question and what did you decide?