At the risk of this sounding like a paid advertisement - I don’t work for a large studio, and I transitioned from C4D to Houdini about a year back, after being an ardent fan of C4D for over 10 years, and don’t see myself going back to C4D any time soon.
The first few months of learning were (very) rough, but in terms of ability and speed, Houdini runs circles around C4D in pretty much every department (except, of course, accessibility). What prompted me to try Houdini was trying to design a ceiling feature, and it was a painful, slow process in C4D. The calculations took ages, and required it breaking the procedural chain in several parts. Any design changes required the tedious process of revisiting the whole chain to semi-manually rebuild it. Flattening out the geometry was also resulting in massive, bloated scene files, that were slow to save.
I was able to replicate the same setup in Houdini with significantly more complexity and control, and keep the entire thing procedural, allowing for instant iterations to the design, and the scene file was under 2 MB.
In terms of direction, SideFX is absolutely crushing it right now. Fully-functional Apprentice version to get your feet wet with. The Indie version is available for peanuts, and its feature set is nearly on par with the FX version. Every update they’ve put for the last few releases have been absolutely massive.
They put out daily builds that aggressively target bugs. There is an official channel to submit bugs and feature requests, and a support rep will contact you about pretty much each one. There’s the SideFX Labs initiative, which is pumping out useful tools at a rapid clip, in between releases.
They have several masterclasses put out by senior devs themselves that provide detailed, workflow-oriented information. The Houdini Discord “Think Procedural” channel is a fantastic place to get quick help as there are several seasoned users on there, and even some SideFX devs.
If you’re doing only rendering, maybe C4D’s accessibility might be a better fit, but if you’re also designing, I definitely recommend trying Houdini.