So, I'm looking at the Sonarworks Speaker calibration software at JRR and there are about 5 different products that come up.
 
What's the minimum I'd need to get?  I need the mic (since I don't have a comparable one) plus...what?  I don't quite get all of the differences between the products.
 
 

I think you'd want this one:

https://www.jrrshop.com/computer-software/plugins-processors/mastering-restoration-plugins/sonarworks-reference-suite-speaker-plugins-xlr-microphone