I have a standard 85, and, I have never SuperCharged to date. The reason I bought the larger pack is for longer life, the pack may lose %20 of it's range over 5-7 years, mine was originally 265 miles, I am already down to 254 miles with a full charge at age 11 months, that's a little over %4 loss so far. Even with a %20 loss of range (265 * .80), I'll still have around a 212 mile range in 7 years or so, and that will be enough for anything I need to do. If you start with the 60 (205 mile), figure what a %20 loss of range will look like in 7 years (164 miles).. That's the main reason I went with the bigger pack... That and the cross country SuperChargers are really being designed for the 85 pack initially, 60s won't really be able to drive cross country for several years, if ever. Even though I haven't used SuperChargers, I just went on a trip to Cleveland, OH, had to rent an ICE for now.., eventually that route will be covered by SC's
P.S. I second Mario's post above as well, Winter use in New England in cold temperatures uses a lot of power for pack heating and heating the cabin, another reason to go with the larger pack.