RE:
I've returned my Core One and bought a Qidi Q2 (that has been running flawlessly for a week now).
I'm sorry, but Prusa printers don't make any sense to me at this quality/price point.
I would have been happy to pay twice the price for a proper Core One, but my machine was riddled with issues because of QC and arguable design choices.
Still, I wish Prusa success with the upcoming INDX.
RE: Asked about opinion for bambu vs Prusa Core
most likely on a shelf above the printer
Since you mention shelf... i've had my 5 spools on a shelf beside my printer, so i created a : HOLDER for them, way better than originally scattered spools across the whole table. It takes around 700g of filament and 20 bearings (classic 608 type), which you can get dirt cheap on aliexpress.
(I wrote "had" above because i switched to Coreboxx and rewindr, thus eliminating annoying buffer. But i have core one, so whole thing now nicely sits above my printer)