It is not a matter of personal taste, you are thinking of using Google TTS voices, but in reality it is not true.

iGO can not use the Google TTS voice and that's it. It works that way and we can not do anything about it......

Since you still do not believe what I tell you, so it is better that someone also answers who is more experienced than me, but the fact that two moderators have clicked Like to my posts it should already lead you to think I'm right.