Shapr3D for the iPad. I found it much easier to pick up compared to industrial-grade (and priced) CAD software. The touchscreen and pen tool felt more intuitive to me, compared to keyboard+mouse.
I have a Prusa MK3S and Mini+. The MK3S is especially reliable, and it looks like the next gen MK4 is even better in terms of speed/print quality.
I really want a printer with multi-material capabilities, but haven't found the right yet. BambuLabs looks interesting, but I don't like how closed the ecosystem is.
I’ve used Blender a lot in the past, but mostly for video editing. What are you using for model editing/creation?