Well I'll be buying a used LEAF soon. Have determined that it's the car that makes the most sense for us. In a few years when the PHEV mid-sized SUV market has more fully evolved, that will be our 2nd plug in purchase. Hoping our gas car doesn't die before then!! So I am currently considering both the 2015 and the 2016 year used models. The "big difference" I know about is that 2015 has the 24kWh battery and the SV and SL in 2016 have the larger 30kWh battery. I prefer the larger battery. I'm hoping to get something with +/- 25K miles on it. There seem to be a steady stream of them coming off leases all the time. I won't get a car that has lived in a hotter climate than where I am (California). I won't get a car that is not a CPO directly from the dealer. I want the extra warranty stuff. I don't have access to LeafSpy. Am I missing out on really important information when determining the health and welfare of the battery in the used cars I'm looking at? Should I download the software and buy the cables and etc etc?? There is one that I just saw online at a dealer -- an SV -- with only 13K miles. It came off a 2 year lease a little early! It still has 12 bars. I looked at the CarFax. It says that the dealer inspected and CPO'd it in April of this year (2018) and it's now SEPTEMBER. I guess it's been sitting around on the lot for a while. Is that bad? How bad? I figure it will make them more desperate to sell it (maybe I can negotiate a lower price?)...but if it is a huge potential battery problem that it's been sitting for 5 months... I won't even bother to go see it (it's a few hours away). What else should I consider? Any/all advice you can give would be most helpful! Thanks!