I like how they go above-and beyond with their support! They're always willing to help you out - which is very rare these days when it comes time for an update or change (or anything really!) This service has helped us get through many bumps along this road as we've grown from one product line into two dozen different products over just 2 years since launch!! If your looking at making changes/updates then look no further than them.
The only thing about S&S was finding someone who can do updates quickly without feeling rushed / etc... But other wise everything went smoothly :).