Bristol_Jonesey
But you get charged to go from Windows 7 to Windows 8 to Windows 10 etc
How is this any different?
There is no more SONAR X1->X2->X3, so it is different.
But the reality is that there was no bug fixes for previous versions of SONAR after ~1/2 year. So 1 year is an improvement, if that really works.
The lifetime of one SONAR version was extremely short compare to Windows, while "usefulness" time is approximately the same. "Extended support" for Windows is for older versions. It is not possible to get updates for X3 even for "members". So I think such comparison is not valid.