Tx, what kind of project do you do. Is it archviz with lots of vegetation, interiors ? It makes a difference maybe. Coronarender is fast for regular exterior work though. Problem I find is getting assets for Octane for archviz. But I am hearing good news about Octane lately crashing much less than from what I heard before.
I wish Corona would go GPU and think sooner or later they have to. I am getting a PC with a 7050x 16 core and a 4090 GPU. Supposed to be almost twice the speed of a 3090. I wonder especially about the times to first pixel. If Octane takes as long as Corona to calculate displacement and so on before starting to render then for me it will not be a big step forward. 90% of me waiting at my computer is for parcing the scene calculating before render.
Tx again for your response. Would love to hear a bit more on this subject although much has been written already. But that's all about render speed and almost none about interactive rendering, calculating displacements, scattering instances and so on. You need to be an experienced C4D user and most reviewers are not doing much more than benchmarking.