There are a number of applications which fill the void between
Pages (which assumes you know nothing about design) and
InDesign/QuarkXPress (which assumes you have years of professional experience... and a pocket book to match).
Designers use what designers use... tools of the trade. So they are going to recommend what they know, and not what they've never needed.
Great mid range design apps for creative nonprofessionals and semi-professionals include the following...
Personally, I use
Create for most of my page layout needs (along with most of my illustration needs also). It is the oldest Mac OS X layout/illustration app, and doesn't do too bad a job at building web pages either (I wouldn't use it for building a site for any of my clients, though I do use it extensively on my own sites).
MacPublisher Pro is sort of a
PageMaker clone... actually looks a lot like
PageMaker.
Canvas is like
Create in that it is a multipurpose app, and
Ready, Set, Go! is one of the oldest page layout apps around (dating back to the mid 80s when it and
PageMaker were pretty much the only apps around for this type of thing).
Swift Publisher is a newer app which provides a lot of templates, so if you are just graduating from
Pages, this may be a good next app for you.
Usually when deciding on what apps to recommend for clients I take the time to get to know them and their comfort level first. What I've found is that there are generally two types of people... those who see a blank page with horror not knowing where to start, and those who see a blank page as being filled with possibilities. The first type of person is usually the type I point at
Pages or
Swift Publisher (because of the templates, everyone else I take into account what they want to make and how far they want to go with it.