Here are my comments.
franlis.be: very profesional look and feel, i like it very much
verastor.be: the 4 words below "Waarom kiezen voor Verastor" are not aligned. The first word is more to the left than the rest. Except from this its very nice.
vorm-en-in-houd.be: i like the menu, is it dynamic or hard coded?
steenbakkerijfloren .be: i don't like the menu, but i do like the catalog. Its exatly what i need for a website i am about to work on, is it a module?
zvcoepidus.be: simpel and clear. Have you tried putting the logo on the header image?
Conclusion: good quality work.