I've been using Inventor for a few years (it was my boss choice, not mine). Until a couple of years ago, I was really missing my old and reliable Solidworks (that was my daily CAD system at my previous job). My colleges were always complaining about me bragging about Solidworks features. Not anymore! Over time I noticed that Autodesk was putting a lot of work in improving Inventor. Every new release is better and significantly faster (Huge assembly can load in just a few seconds). With the last release, I can honestly say that I don't miss Solidworks anymore. The interface is so much better, the integration with Fusion 360 is almost perfect. We use the two CAD systems (Fusion and Inventor) side by side moving 3D models back and forward almost every day. No issue, whatsoever. We have junior designers working on single parts on Fusion and more experienced engineers working on the assembly with Inventor. We also go back to Fusion also to run simulations and rendering on the cloud (I don't know why Autodesk doesn't bring those great features inside Inventor).
Sorry Solidworks, but now I'm very happy with Inventor, my new favorite design tool.