So THAT'S a key piece of info I missed, D'OH! I bought the nozzle X to print some carbon fibre PETG, and maybe some wood / metal filaments in the future. Had no clue you needed to compensate THAT much for the steel.IMO unless you are printing abrasives you don't need a Nozzle X. But it is a steel nozzle, so you need to increase temperatures to compensate for the poor thermal conductivity. Like 15-20C more generally.
Seems like its hard to go wrong w/ the SKR E3 Mini (w/ TMC2209s), even if you don't have an Ender 3. But I'm not sure about your LCD working. Otherwise can just grab an SKR 1.3/1.4.Suggestions for a replacement board for my old i3 clone? I can figure out the Marlin config, and hopefully my LCD display will carry over. It does have double Z motors. I'm out of touch on 3D printer stuff as I've been focussing more on my CNC router.