An interated course is a tightly linked mix of ground school and flying that is retsrictive in may ways and is not always popular with operators because you end up with so few hours. That said, those schools that do it, do it well. The big problem with it is that you don't see the fruits of your labours (i.e. your licence) until you graduate.
Structured modular is a more flexible route that takes you away from the daft regulations that exist for integrated. You might call it guided modular as well. One advantage is that you gain your PPL early on and if any free flying comes up you can take advantage of it.