MK4S

I would personally splurge for the MK4S, the speed and quality is unmatched, and the MK4S is still phenomenal. Also, you have the option to upgrade it to a Core one later down the line. Rather than a mini for $700, you can get the MK4S kit with free shipping for $800 https://www.printedsolid.com/pro

You can sell it, there is probably some customer base with mk3 and mk4 that may consider it for right price. I believe for various reasons enclosure for mk4 was really dead end. The Biggest issue is to volume you have to heat up, location of the printed part on the bottom due to printer construction

Doing the maths over here... with the current black friday deal as a comparison; https://www.prusa3d.com/product/original-prusa-mk4s-3d-printer-kit/ You would have to be a complete fuckhead to buy from Amazon...? Right? Am I missing something...

I have a Prusa MK2 that I can turn on and print like new, if I wanted. It has 28k hours and I've only replaced belts once, and fans due to bearings wearing out. I have three MK3s with more than 15k hours each, one near 20k. Again, only a few fans, one extruder because of my own dumb mistake. My MK4S

Upgrade to Mk4S https://www.prusa3d.com/product/original-prusa-i3-mk3-s-to-mk4s-upgrade-kit-2/

I've had a Core One upgraded from MK4s for 4 months. The only problems from your list I've experienced are the gantry squaring, and prior to the fixes Prusa made there were minor VFAs in some prints, now gone. There's definitely an assembly problem if your nextruder main plate wore out in 2 months.

Upgrade kits are very well documented, and prusa 24/7 support is very helpful for when things go wrong. I like prusa's philosophy a lot as well. I started with a Mk3 and upgraded it to a mk3.5 last year. When indx comes out, I will move my nextrueder over to it and turn it into a mk4S. So I'm still

The two big pro for me are: That Prusa is open source firmware so you aren't beholden to the whims of the company. Bambu tried to lock down their firmware a few months ago but had to partially backtrack due to community outrage. Still it broke integration with third party slicers iirc. Prusa sells u

If you updated from a MK4 or MK4S, you will need a lot of additional parts, so I would recommend to do this only if you consider this project to be worth your money (also consider the opportunity cost concerning other spendings of your money). On the other hand, if the MK4S was originally some older

You summarize why I went with a Bambu printer and not a Prusa. I need a bigger printer. If Prusa had released their L sooner instead of the Core one, maybe I would have took that route. But then, with what Bambu is offering, and even Qidi, I don't feel like Prusa is there anymore. For absolute fabs,