So I always struggled with my Ender 3, really having trouble getting it anywhere near reliable, and I never really got there honestly. I printed and made so many mods for it, and replaced so many bits. Filament guides, different levelling wheels, fitted a new extruder mechanism, replaced all the PTFE tubing and couplers, new cooling fan setups, two fans died, my bed was warped from the factory the list goes on. But I really loved 3d printing and decided to hang it out there and get a better printer - I got a Prusa MK3 a week or so before Christmas.
It is absolutely amazing! I've been printing PLA, PETG, ABS, ASA... I've had like.. two, maybe three failures? And they're all due to bed adhesion and were fixed with a brim of a couple of mm.
I'm honestly staggered by how good it is compared to my Ender. I think my Ender was a bit of a lemon, but I really did try with it. I'm going to keep going with it and try and sort out but the difference is night and day, I'm totally in love with this Prusa.