I have used this product several times as well as the Catx solution that someone is trying to get others not use. They work fine just like the Catx solution.

Anyone can miss-wire a soldered connector, as well as do a cold solder joint, and have the connection fall apart. I have also seen this once or twice in my career, well OK, maybe several dozen times... Back in college they had us solder all kinds of crap, and back in the day I used to have to solder on all the AudioQuest ends because all our cables had to be "custom" even if they were standard length... Use what you feel comfortable with and what works for you. I am done sitting behind a rack breathing in solder all day long.