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

If you haven't found it already, there are assembly instructions for the MK4S here. (make sure to double check you have the right model). Prusa's assembly instructions are always very good and very detailed. They are also paginated, so you can pick up where you left off pretty easily. Each page also

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

Prusa is best at not treating their customers as enemies/adversaries, and their printers are pretty good too. They're a little outside your price range (eg: MK4S kit is €719), but I encourage you to consider it. Buying a second, good printer because you bought a cheap, crummy first printer is even m

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.

Cant find the edit post button, so posting more details here: I'm entering my version of the buffer, using some cardboard to save on filament, as a Print of the Month submission (if I need to be specific). Printables tag: u/InNate_1357430 https://www.printables.com/model/1740679-parametric-mmu-buffe

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