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My first printer back in 2016 was a FlashForge, which at that time filled a similar role in the market as Bambu is doing now.
Their designs were initially more open than Bambu is now, but went more proprietary over time - I had a Dreamer which still used a lot of “standard” parts. Despite that I ran into several issues that were either a pain to work around, or impossible, due to Flashforges attempts at keeping bits proprietary. I switched to Prusa after that, and have been happy ever since.
For me personally that experience was enough that I’ll never by something like Bambu - though for people with less technical abilities who just want a box that works they’re perfectly fine.
Currently I have a mk4 upgraded from a mk3s as main printer, in the enclosure, with mmu. I’m considering upgrading it to a core one next year, purely because of the lower footprint of the core one in a case compared to the prusa enclosure, and my limited space. My old flashforge was corexy, and was quite annoying about bed leveling - which lead to me avoiding corexy for a while after that. But as far as I can tell the bed mount on modern corexy are way better than on the old flashforge (which had a tendency to bend forward), plus there’s autoleveling now.
Prusa has other software than their slicer? What does it do?