I never read the Yield esteminations... Because, i dont really understand them^^ i look at seedfinder.eu and read what ppls wrote there, sometimes its teh same text like breeder, but most time there are personalized comments / texts. For me yield is no point for the decision to buy them. I look here at gd how the most of it come out, how difficult they are. how resiliant they are is for me one of the biggest points. I would always recommend you to buy from respected breeders. Maybe they dont have such fancy names or packages, but the Plants have good and stable genetics. This is how i do it, i see a strain, look on seedfinder.eu and here on gd how they are to grow........ and in i have doubts i dont grow it. As you can see in my grows i have prefered Breeder. And i would always go with them , because the Customer service is a very important point to me too. If you have problems, someone who helps you or send you new seeds. We can talk per PM for giving you some Names of good Breeder. i dont want to do it here