Hey Rick,
Thanks for that comparison. That's the sort of thing many of us need.
Concerning the "slight sweetness but isn't", is the ABV higher in the CC than in the RJS?
I know many commercial OVZ's can be up in the 15% range. Higher alcohol, but below 40% can sometimes come across as extra sweetness.
My last trip to California wine country, I spent time in Northern Sonoma and in Mendocino County, where lots of Zin is grown/made. I did several tastings of multiple Zins, side-by-side, rather than one Zin, one Pinot, one cab, ..etc. There are some really great Zins, but most seem to come from the smaller boutique-style wineries, which you won't be able to sample unless you go there.
A side note, in the area where I did my tastings, it seemed to be common practice to mix a small percentage of Petite Syrah with the Zin to add body, mouth-feel and a little extra boldness. I liked that, since Petite Syrah is a favorite.