ut is the first such software, focusing on wow. And the first version has more users. I use it and will share my opinions and shortcomings. The hd sound card needs to be patched, and some of it is not supported. Sometimes I cannot log in to the room, and there are lags. Advantages: There are novice instructors who can help you solve problems you encounter and can guide you through operations. It consumes little memory, has no ads, and the voice is relatively smooth and clear. There are also some official entertainment rooms.

yy is an upstart in voice. The interface is similar to QQ and the operation is simple. People who have played QQ will understand it at a glance. I just heard that users are still in the accumulation stage and the number of users is small. The memory usage is also larger than ut.

Actually, it depends on what game you play and what voice your guild uses. You'll find it after using it a lot. I recommend using ut, which is very concise. Text chat has only one font, no expressions, and no avatar. Its advantages are similar to gtalk. If you like to show off, use yy. This is my personal opinion, I hope it helps.