We actually have a 2014 CS but we are looking at buying a Zion with 400 ecotrek and possibly voltstart. I just posted a thread requesting feedback from recent purchasers as to how the systems are now working. Markopolo posted the link to your post about recently purchasing a CS. Could you please comment on whether the problems with the ecotrek and volt start have been resolved in your unit? We are looking to switch as we really want the power of the lithium. By the way, we have had our unit to the dealer twice for failure of the Alde unit. It worked after the last fix but with winter we haven't used it much since the test. Thanks and good luck with your CS.