Weber Workshops The Key vs EG-1 [$2,000-4,000]

So I’m looking to upgrade my grinder and get myself a birthday present, but I’m a bit torn on which of these two to buy. I’m not seeing a lot of comparisons between the two and the price hike from the Key to the EG isn’t a paltry one. I can afford it, but if the difference isn’t substantial I’d of course like to save the money.

For context this would just be an at home machine. I’m an amateur and this really is just a nice gift that I want to get for myself. Currently using a Niche Zero and it gets the job done, but I really would like to take a step up so to speak.

I only drink espresso, I gravitate towards medium-dark but am really starting to enjoy the fruity fermented light roasts.

Espresso machine is a LUCCA M58