What do I keep? Or sell? Grinders discussion

I currently have and have had for 3 years a Eureka mignon silenzio with a single dose hopper. It’s been good to me.

Today, I got my hands on a brand new Mahlkonig x54 for $80. I can get a single dose hopper as well. Which do I keep? Or both? Or sell both and upgrade. Help me decide yall!!!