I worked 10 years with Autodesk Inventor, and then, switch job to a company that uses CREO 2.0 and Solid Works.
In this past 6 months, I used both CREO 2.0 and SW, changing from one to another because we have clients who have CREO and others SW.
From my point of view, CREO is superior to both Inventor and Solid Works to complex projects.
But, Assemblies and drawing of Inventor are better.And a very important aspect, the navigation.
Inventor's navigation is superior of both CREO and SW, and this is important part of the project routine...