Drupal 7 or 8?

Hi,

I’ve built some sites in Drupal 7, which is a trusted environment for me now.

Now I have to create a new site and I wonder what the advantages are of Drupal 8, further than the online editing stuff… ckeditor installed and so on…

What I want to know about Drupal 8 is:
– is it a better platform for mobile devices (smartphone/tablet)?
– what about roles/permissions, easier and more flexible to use?
– what about security, is it safe enough?

Can anyone give me some advice?

Thanks!
ciao!
Sven

Drupal version: 


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