Another software spot
I have also been meaning to try out Basta. HAve you tried them out: http://www.tolvan.com/index.php?page=/basta/basta.php
A program I think shows promise is VirtuixCAD2. https://kimmosaunisto.net/Software/Software.html
It is free for non-commercial use, paid for commercial use. But, this seems to be a decently powerful program that might be worth comparing to Xsim and other crossover programs. Wanted to bring it up since discussing possible software.
Still considering SoundEasy, which looks powerful, but I would like to get a better grasp on the fundamentals versus buying that and getting lost in bells and whistles (not saying those are bad, but easily able to distract newcomers trying to run down every avenue).