Which insurance / mutuelle to pick? (Brussels)

Hi,

I understand that as an employee with a Belgian contract I will need to join a Belgian health insurance fund. I saw the list of insurances on Protected content but it would be really helpful if you could share your experience on which ones are considered best.

Is there some comparison site which provides an overview of services? I suppose there are differences in what is reimbursed and the customer service?

Thanks a lot!!

Almuth