I am about to test WinFindr, but the first thing that I noticed is that your comparison chart states that Agent Ransack can't search for text inside files - this is incorrect.
It is perfectly possible to run Agent Ransack as a portable app.
Agent Ransack supports Boolean search terms, so you can exclude things from a search.
I am aware that you mention under the comparison chart that this comparison is only based on the free version of those apps, but it would be more helpful/less misleading if you changed the table to insert something like "only in Pro" instead of blank boxes.