The preference between Bootstrap and Foundation depends on individual taste and specific use cases. While Bootstrap allows for quick and effective results, it does come with certain limitations. On the other hand, Foundation offers a more versatile framework. Both systems may encounter issues with older versions of Internet Explorer, but Foundation could potentially have more challenges in this regard. The majority of companies I am familiar with tend to utilize Bootstrap. Nevertheless, customization is necessary to tailor the files to meet specific needs.
Personally, I opt for Bootstrap as it seamlessly integrates with my CMS (typo3).