1. The Nextruder looks 5 years behind Bambulab nozzle switching, without to mention the cost of a new nozzle. A clogged nozzle is a non issue in a Bambulab printer, but it causes me a big cost and more work with my MK4 (which has the same extruder as the Core One).

2. How is it possible that these printers still lack at least a cheap webcam?

3. One of the strengths of Prusa should be support. It used to be very good, years ago. Now the issue the OP is reporting about the app that is not able to detect the principal component in the sound of the belt, is an example of a more extended problem, that one can see in many ways, especially in the MK4 / Core One documentation, that is especially lacking.

In general, here the OP is doing the work that Prusa should be doing to provide a better experience, without to mention all the design issues that they are not fixing directly before shipping their printers. I'm also a Bambulab user, and my A1 costed a fraction of my MK4 and it is the printer I always hit because of the zero-issues. It just works.

Now companies may have ups and downs, but there is some problem at Prusa: they are still not understanding what's really happening and where their problems are.

It looks like he posted this so may see my comment. I just want to say thanks, I appreciate the things you've put out into the world.

You mentioned you stripped one of the tensioners - does a screw thread into a 3d printed part? Is there a more robust version of the part?

I dont want the print to pause in some gcode function waiting for me to pick &place

I swapped my Ender5 for an X1C two years ago, and since then, I have only had to do whatever maintenance the X1C tells me. Using my X1C feels much closer to using my laser paper printer, whereas my Ender5 ended up being a hobby in itself.