Using multiple sections VS a single section with entry types
It's hard to answer without examples of your content types. 

I would suggest that if you would ever need deliberately relate one Entry to another using the Entries field type, then making use of separate Sections for each type of content would be the way to go. 

e.g. If an "office location" entry is the parent to multiple "services"

A more obvious factor is when an entry type needs to be a Channel vs a Structure. This can only be set at the Section-level

Hope that helps