Are you planning on leaving TYPO3 for the newest version of Drupal? We will gladly assist you during the process of migration. If you were convinced that you found the right solution for your website, Drupal 8 is bound to impress you because it takes things to whole new level.
We consider Drupal to be better equipped for making multi-language websites, the CMS is more user-friendly and it provides better SEO tools than TYPO3. For example, to create nice URLs, you have to install an add-on for that, while Drupal can make nice URLs from the get-go.