WordPress is a faster solution for creating a static site that has a good design, responsive and modern. Responsive design is harder in Bubble.
WordPress also comes with a built in blog and a lot of WordPress templates are well setup for SEO and getting traffic from Google.
Benefit of Bubble is you have nearly unlimited customization and you could integrate the marketing site and internal business application together into one. You could much more easily build your internal quoting tool.
Here’s a template I would recommend for a step by step quoting system for a marketing company:
Feel free to register on my site for Bubble related tutorials and tricks to help you build your marketing site.