By mistake I've posted this question on the Programming topic, if someone could remove it from that tread I will appreciate.
Now my question:
I am now starting my first Magento 2 store and I have to choose which will be my starting point. Magento 2 now comes with Less and other tools and the themes Blank and Luma seam pretty good and well implemented. My question is? Should I use Bootstrap on my custom theme? or simply work out of the box with the blank or luma themes?
Off Topic: Will magento 2 work better with php 7 or 5?
Thanks for your help.
Looking forward to read about your thoughs and opinions.
.Magento 2 has two responsive themes right out of the box ( blankand Luma), with Blank being Magento's own version of bootstrap.You can create a theme that extends from blank, or if you prefer bootstrap you could create a new theme based on nothing at all but that takes some more work (you would need to change require js). Following articles will help in creating a new theme