We have been on ColdFusion since v6.  Over the years we stuck with that version and were resistant to change.  Finally, we decided to upgrade.  We moved very quickly to the new versions of CF and are currently running CF 2016 Enterprise.  We have 3 development environments and have many clusters of CF servers running on Linux.  CF 2016 was packed with new features and performance has been improved greatly.  We have had very few issues at this point.  We are happy that Adobe has a roadmap laid out for the next several years and plan to continue to vet and implement new releases as they become available.  We work closely with the Adobe team and are excited about the upcoming releases.