Here are the reasons I think this is the best system for the majority of content creators in the professional space:

Most of the popular systems now make recording into the camera from one or two wireless mic transmitters relatively simple.

What used to weigh over 5 pounds and cost $500-700 dollars is now a little larger than a credit card and weighs mere grams. 4TB SSD drives now pack enough punch in a small package to be a serious tool in mobile video production.

if you had to sum up the difference between the two similar looking mics it would come down to these two features:

The Wireless Go II can record audio as well as transmit audio, and works with up to two microphones.

The Wireless ME can record up to 3 microphones, but has no onboard recording option.

I think when considering your first lighting kit for your camera, whatever the brand may be, you first need to determine the main application for the lighting.