Answers
Is there any Windows software comparable to Reunion?
We don't believe there is any genealogy software for Windows that compares to Reunion for the Mac. Since we only create and use software for the Mac, we can't make a recommendation about (and aren't that familiar with) Windows software.
Our only advice would be to visit the following web page...
http://www.cyndislist.com/software.htm
It contains a number of links to different genealogy applications.