chipp,
of course i considered learning blender (and did some Donut-tutorials), because paying €86 (c4d incl. redshift) a month compared to paying nothing is a lot. But I go for Cinema4d because of:
1.
I already have knowledge in cinema4d, here is a little showreel of mine: Little Showreel - 3d-Modeling & Rendering with Cinema4d - YouTube
Mostly I work with Allplan. This is a powerful 2d/3d bim-architecture-software. Owned by Nemetschek group - they also own Archicad, Vectorworks and Cinema4d (and others). They built in an direct export/import Allplan/Cinema4d.