Correct me if I’m wrong, buddingphotographer, but I think the difference is that the first one uses “RF”, a radio frequency, versus the second one that uses “IR” infrared light. https://blog.1000bulbs.com/home/ir-vs-rf-remotes-whats-the-difference
You’re right, @jamesstaddon. 🙂 I mostly find myself using my wireless remote for group portraits, as you said. It’s awful handy to be able to take a shot without having to be at the camera!