My first printer was a creality cr6 (kickstarter edition), and it’s been absolutely fantastic. I use my printer to solve problems mostly by designing my own parts for things. My printers really are tools to me. My cr6 doesn’t get used a lot, but I turn it on, run the auto level, and hit print. I’ve printed roughly 2000 hours with it, and I’ve had one jam, and zero failed prints (I’ve stopped a couple for various reasons, but I’ve never walked in to find a spaghetti mess). I upgraded to the community firmware, a dual drive extruder, and capricorn. Also, I print almost exclusively in PLA.

My second printer is a kingroon kp3s. I’ve printed very few parts with it. I got it as a toy, and plan to install klipper and just be able to print fast. I like the small for factor, direct drive, and linear rails. It’s a decent printer, but it’s not as “easy” as my cr6 (no ABL, and my bed seems to have a high spot right in the middle). The prints I’ve printed for testing are small, and the quality has been really good. I just haven’t had a lot of time to play with it and really dial it in.

All this said… I’d by a mk4 in a split second for my use case. Again, as a tool that I turn on every few months, prusa is a known workhorse. My only complaint with my cr6 is it’s slow… And the mk4 would take care of that.