As a background, we have spent a lot of time in testing and development with our site prior to going into production. We installed and de-installed several plugins, components and modules that are associated with Joomla! in an attempt to evaluate features, ease of installation, overall use AND support.
Having an IT Security background we carefully evaluate any and all input that may go into our backend database. I also have a professional advantage over most developers through determining vulnerabilities with the support of my team (friends in the security industry) and from this make changes directly or recommend changes to the vendors.
NS Pro was the easiest to install and we got the absolute best support directly from Chris himself. He is very dedicated to making sure things run very well and in a relatively secure fashion. He received and implemented our recommendations, provided us feedback and we were able to swiftly update all packages.
We only wish all other Joomla! vendors would provide this level of support, ethical conduct and professional feedback.
Good Job Chris, you set the bar others are now measured against!