Finally I have finished my business site in XOOPS.
Besides working for my boss, I started my own company which provides IT services for small businesses. I decided to use XOOPS for managing the site: Flex Automatisering
Modules used: - WFChannel - TinyContent - Liaise
The theme is a modified Obscene theme from Astonthemes.
It still needs some textual changes but until now I'm very satisfied using Xoops for a business site.
And for the Dutch readers: Comments/Suggestions are welcome!