Oh Boy! After few months using (losing) cheap blu-rays sets like the Memorex and Verbatim, had ton of compatibility problems and ended up losing some of the blu-rays data I decided to give it a try to this pricey object... I couldn't be happier! They burn faster than you might imagine, I was able to get the job done 10 out of 10 discs and the construction quality seems very good to me, some time will be needed before make a final conclusion on the durability aspect.
I will post updates in few months and I may change the ratings to 5 or 1 stars depending mostly on durability / compatibility.
This Blu-rays still working perfect, none a single error at burned them and so far played in every Blu-ray player. I definitely give them 5 stars rating.