Yes, it's in German, so you have to use Google translate of auto-generated sub-titles, but they've said they'll eventually get proper sub-titles done for the key videos. I'm posting because they had the use of a particle analyser from Zurich university, and we all love particle analyser graphs, even if they have no flavour .

Here's the line-up; the first videos released will be of Group 2 (my notes in italics):

Comparison group espresso grinders 1: 760 - 2250 euros
MAHLKÖNIG 64S GBW
CEADO E37S nero
ROCKET Fausto 2.1
BARATZA Forté (I don't know if this is AP or BG)

Comparison group espresso grinders 2: 640 - 750 euros
ECM S 64
NICHE Zero
MAZZER Mini Electric ON
EUREKA Mignon XL 65

Comparison group espresso grinders 3: 500 - 530 euros
QUAMAR M80 E Touch plus
EUREKA Mignon Magnifico 55
BARATZA Seette 270 Wi
ROCKET Faustino

Comparison group espresso grinders 4: 400 - 470 euros
MAHLKÖNIG X54
EUREKA Specialità
LELIT PL72 (Lelit William)
G-IOTA Probarista coffee moles (a.k.a. DF64, etc.)

Comparison group of espresso grinders 5: 150 - 250 euros
SAY bcg820 BSS (Breville Smart Grinder Pro)
LELIT PL044MMT (Lelit Fred in a nicer case, no longer sold in USA/Canada AFAIK)
LELIT PL043MMI (Lelit Fred)
SAGE SCG600BTR (Breville Dose Control Pro)

Comparison group espresso grinders 6: 80 - 150 euros
GRAEF CM 800
ROMMELSBACHER coffee grinder EKM300
DELONGHI KG 521 M. (I think this is the only one in this group sold in USA/Canada)
TSCHIBO coffee grinder E with scale

- from https://www.kaffeemacher.ch/blog/espres ... n-zuhause/ and Google Tranlate. Eventually full results with data will be posted on their website.

Introduction and test protocol (No results):

Hey! It's funny to find this here already
I live in switzerland and can help you out with the language or any other information if you need it. They already tested a lot of espresso machines and are very thorough in their testing. I just wish they would add more high end grinders to the list. But that might happen in the future.

They definitely need the super heavy weight division for the fanatics!

The provisional final results are finally out of what has been arguably one the biggest home espresso grinder tests ever done - and grew from 24 grinders to thirty grinders split into nine categories. ("Home" means home, not commercial grinders.)

The video is over an hour and you have to put up with Google auto-translate: http://www.youtube.com/watch?v=q5GghSxvJCM

The text is still being revised, but here Google Translate does better: https://www.kaffeemacher.ch/blog/espres ... n-zuhause/ That page has links to all the individual test results and videos, particle distributions, etc.

The final test was a blind tasting of the nine category winners:
(Apas is a medium roast Brazil, so indicative of more traditional espresso; Margarita is a lighter single-farm natural from Nicaragua; and the Forté is running the ceramic burrs)