Lighten up Francis.
While Line 6 has gained in popularity among the amateur, semi-pro and regional acts the vast majority of the pros still use the name brands, Shure is still the choice of the touring professional because they are rock solid. One of the reasons Shure is still the man, is because of the massive amount of money they put behind their products. Shure has been spending a fortune on Washington lobbies to fight the FCC's sell off of the UHF bands. They have by far the most responsive people in the industry for tech support and wireless knowledge base. Their research and software tools are absolute the top in the business.
But for a system that I would gig with? I use Audio Technica. Why? Because they gave me a ******** of them. Yes, they gave them to me as an endorser several years back. I paid nothing for them. But if I had to buy, I would buy Shure. They are what I've been selling and installing with minimal issues over the past 20 years. And if they gave me a ULXSD system, I would use it over my extremely nice A-T 7000 series units. How does it affect my tone? Nobody listens to my tone I play in a rock band, we are loud they are drunk. My wireless work and I get paid. They sound good enough for me to of worry about the sound.
Not saying the Line 6 don't work. I would just be more comfortable using a product that has some care about the wireless industry as a whole.