Well, as I said, get acquainted! 7013, 6013= year 2018. 7012 = 2017. 7011 = 2016. 7200wa = I believe 2013, not sure (edit, 2014 base, 2015 wa variant with added hdcp compliant hdmi board). Anyway, eArc included from the year 2017 models (and on ) could still be included in the majority of Tvsets producers, and for Marantz is an old feature! I would not buy again my receiver today ( unless it's a gift !), so eventually go for the 7012. Regards Alessandro