I've recently moved this website onto Drupal 8. From my previous version on Drupal 7 I only had to install 4 contrib module and to keep the site simple 1 theme. I've kept the website itself very simple as that's what I wanted to achieve and perhaps I'll implement a design into it at a later date.
The process was not painful at all and made my life very easy. I'm currently working on Drupal CREAM which will be an entire Drupal Distribution for Drupalcamps and this will be on Drupal 8.x