
Multiple Brands
DF54 Series
Great value for espresso, but clogs and poor for pour-over.

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I have the Atom 65 GBW and really love it. Very precise, quiet and grinds 18g in under 5 seconds. What’s not to like?
My coffee cart is under this budget. I use the Decent platform, which is the Ikea Bror cart. My grinder of choice is the Eureka Atom w65 grind-by-weight grinder, and I use the Decent "rinse and repeat" rinser, which is a fully self-contained pump driven rinser. To get under your $5,000 budget, you'll have to find a decent de1 or de1xl pre-owned. But you can regularly find those around the $3,000 price point. You can also just use any other dual boiler or heat exchanger espresso machine and it will work on this platform.
I have a Eureka Atom W65 and would highly recommend it.
My sister had the df64, her specific one might have been a bad copy, but it was a piece of crap. She paid for the upgraded burrs, and that machine had to be readjusted basically every day to get a good shot, it was very frustrating She upgraded to the allground sense which is unbelievable, so good!!! Best grinder I’ve seen personally. We had the eureka mignon specialita at home, and today we’ve upgraded to the eureka Helios 65, which seems great as well, but doesn’t have grind by weight. If the budget is really not a problem, I would Look at the allground sense or eureka atom w65, as they are considered some of the best home grinders. Also there is a new mahlkonig e64 ws for around 1k which is supposed to be amazing There are much cheaper grinders that are phenomenal, but it seems like you want the best possible. I personally don’t love single dose that much, as I might be a little lazy 🤣
1zpresso J-Ultra was the first one (a gift). Eureka Atom W 65 now (also a gift). I had been dreaming of something with a hopper and GBW when I received it. Single dosing into jars for at least three drinks a day got old quick. I’m not a very particular espresso drinker and only make milk drinks but I love how fast and quiet it is FWIW.
The Atom is built way better than the Mahlkonig. The setting of the grind is slicker on the Mahlkonig but the Atom works fine. The syncing on the Mahlkonig is a cool idea but nobody gets it to work consistently. The Atom stays really clean and is easy to maintain. The two thing to know about the Atom is that you will lose \~8g of bean when you change bean types assuming you’re not a barbarian like me and just put the new beans on top of the old and if you make a substantial grind size change (like you might make between light and dark roasts) it takes the grinder two doses to get the weight right.
I agree with you about the grind adjustment on the Mahlkonig. At the same time, I find I rarely touch the grind dial through a kg of beans.
I have the Eureka Atom 65w and highly recommend it. I normally do 3-4 shots in the morning and 1-2 in the afternoon. Grinds are great and end up in the portafilter, not everywhere. I don't bother with WDT as I can't taste a difference. It's really well built and easy to clean. It's also relatively quiet. The two things to know about it are: 1. When you change grind sizes it takes two doses for the grinder to calibrate the weight. This is only with, what I would call a large grind size change, like when going from light roast to dark roast. I make micro adjustments (i.e. to go get from 34 sec to 30) while it's grinding and it doesn't need to recalibrate. Also, if you're cheap like me, you can use the coffee from the calibration doses, you just have to adjust the recipe. 2. If/when you change beans you will have approximately 8g of waste of the old beans. I don't purge in the morning or if I get new beans of the same type.
I use a Eureka Atom 65w, I highly recommend it for both grind quality and ease of use.
I have an Atom 65w and have had nothing but a really positive experience with it. It's definitely built more robustly then the Mignon and has dedicated espresso burrs, it's also much more solidly built and heavier than the Mahlkonig E64ws. If you like your Firenze maybe it's worth going up to the Atom 75w for you.

Multiple Brands
DF54 Series
Great value for espresso, but clogs and poor for pour-over.

OPTION-O
Lagom Casa
Versatile, premium build, high clarity; slow for large volumes.

Niche Coffee Ltd
Niche Zero
Durable, easy workflow, great for dark roasts, not light.

Fellow
Ode Brew Grinder Gen 2 Series
Excellent for filter/pour-over, but cannot grind for espresso.

Baratza
Encore™ ESP Pro
Durable, repairable, versatile, but loud, messy, poor for light roasts.

Ranked #1
Multiple Brands - DF54 Series

Ranked #1
Mazzer - Philos

Ranked #1
Baratza - Encore™ ESP Pro

Ranked #1
Fellow - Ode Brew Grinder Gen 2 Series