For us, it was the nicest vehicle, had the largest cargo area, had the best range of non-TESLA EVs and had two DC chargers in areas that I could use. We have a 24 kW battery, now, the 2016 SV/SLs have a 30kW battery.
Because the Tesla was too expensive and the LEAF was available. In 2012, when I got my first LEAF, it was the only electric car available besides the LEAF. And a Chevy Volt is NOT an electric car. It is a hybrid, pure and simple.