I just got finished building a page for wireless triggers. You can always get there again by clicking "Triggers" in the menu bar along the top of the blog.
This is a messy subject. My goal for this page is to list all the popular wireless triggers in use in real estate photography and maintain a corresponding reader usage poll that shows how many readers are using each type of trigger. I think the reader poll on the same page gives a lot of insight for beginning real estate photographers trying to decide what to purchase. When you are able to see user usage distribution of 800 to 1000 people taking the poll (like there are on the camera and lenses pages) it begins to tell you something.
The green shaded lines are what I believe to be the industry standards from the research that I've done. The non-shaded lines are triggers that either seem to have some kind of issue, are too new to assess or like the Cactus V2 have a newer version out.
Please take the poll if you use triggers and leave a comment either here or on the Trigger page if you think that I've over looked a trigger you think is important.