You are missing the Zero S 14.2 "power tank" model like I have. With it's price about the same as the SR, but with a longer range, it probably deserves its own model category. If you really have a few bucks to spare you can also invest in a "power tank" equipped ZF14.2 SR. I believe that there are a few of those on the road right now. I seem to recall that Motorcycle.com is testing that model right now, but I am still waiting for them to publish their results.