Pages can't open docx documents from Dropbox

I am new to MacBook Air and Pages having just moved from a PC. I have an ipad2 and iphone and create documents on Quickoffice Pro HD and store them in Dropbox. I have been unable to open any .docx documents on my MBA. I have tried opening Pages first and selecting Dropbox from the application. I seem to be able to open .doc documents but saving them back to Dropbox is awkward and they don't end up in the right folders. Other than installing Microsoft Word on my Mac, what can I do to make this work better? I was under the mistaken understanding that Pages played better with MSWord. Is there an app like Quickoffice Pro for the Mac?