Not really mixed answers. It's just there is no simple way to answer your question.
If you are wanting quick and simple answers, maybe SEO is not for you.
You could find out your own answer by taking action or using the search bar and read others experiences in the same subject.
I am not writing this to be mean and I hope you find the answers you seek.
Also, if you want specific answers to your questions, please write more detailed questions (More than one sentence). Especially for complex subjects.