This is a question for SCA early adopters. I heard it was initially terrible, so we've stayed away. We're still in SiteBuilder.  How much do you love SCA now (if you're in the latest version)?  Is it SCA ready for primetime?  Does it require heavy coding for every little design tweak? Do customizations have to be redone with every upgrade?  That is a big deterrent for us. Every time we've upgraded Reference checkout we had to manually redo all the customizations and documentation was always sparse. Terrible. Didn't want that mess for our entire site.  Also, there is nothing user