OK @jackcrimson, now that's understood, there is little advantage featurewise of Enterprise over Professional - unless you are part of a commercial enterprise domain - but that's real money, and only worthwhile when a lot of seats or enterprise users are part of a larger organization that requires reliability and actually fewer new features than may be available in the latest builds of retail Windows Professional (Insider builds).

However, you can run Enterprise as a trial installation, perfectly legally, alongside your professional upgrade, as NavyLCDR pointed out here:

Solved Installing windows 10 enterprise replacing windows 8.1 pro - Windows 10 Forums

Or as a virtual machine (Edge on Windows 10) from here:

Virtual Machine (VM), Windows Virtual PC BrowserStack