To a large degree it comes down to personal preference, and the enjoyment you get out of the whole end to end process.
I went from modded DSLR to a ZWO 1600MM and filters, and while there is a huge difference in the data you can get, the mono workflow is much more involved and you have many more elements in the 'chain' to get right.
I added a ASI533 OSC about a month ago with various filters (IDAS NBZ and optolong l-pro) and the workflow is sooo much easier and huge amounts of fun with the RASA8.
For dimmer objects in my bortle 6 skies I can start to see the limitations, so I will go back to mono at some point, but I can definitely recommend OSC for the fun value
