I had used a couple different brands of wireless over the years
Right now, I'm using the audio Technica clip on mike,
but I went back to the wired version.
There are cons of wireless too ..
A little more setup on the receiver end .. And you had better always
bring extra batteries for the transmitter. Some times, I'd put in a fresh
battery at the start of a performance because batteries like to die right
in the middle of something important.
Some receivers required a wall-wart so that was another thing to mess with ..
power outlet, extension chord. If you have a PP powered receiver, that's great!
And I have had interference with other people's wirelesses on rare occasion.
The nice thing about a cord is the simplicity and reliability.