Im still on the road of learning what i like and dont like about my 3d printers. So far I have an Adimlab Gantry-S (ender 3 knockoff) which i love beacuse ive been able to learn so much with it. While it isnt an ender 3, so it has some differences, i like the fact its let me go make my own modifications to it.
My prusa mini works with very few failures.
My big printer is the cr10s pro v1 modded to v2. It prints well enough and is large enough for most of what im printing.
Overall i mostly print small stuff so far, so im a bit biased.
Ive always been interested in the delta printers, but know they can be super finniky if there are any issues. That being said i think the core xy box type of printers will both be my next, and what i see as being a better design.
Though the Positron is defidently a neat idea and i appriciate how innovative it is for a small printer.
Its a bit of a ramble, but im looking forward to see what everyone else says is their best printer and why. 