Satchmo wrote:Also, I get the impression that the Mazzer ring is difficult to adjust compared to the MACAP and I should not consider the La Cimbali if I am going to go from espresso to a coarse grind for a drip machine which would probably not happen.
Jon-
Your title
"Grinder with most infinite adjustment for espresso?" suggests to me you want to know what grinder has the least burr thread pitch thereby increasing the usable espresso range. I don't know the answer but I suspect someone might.
As to ease of adjustment, the Mazzer is no problem. The adjustment collar has a "Start Here" sticker for the factory tested espresso setting and you can make adjustments to either side of that setting and use it as a reference. There are markings on the metal collar to help out and an indicator arrow on the grinder body. Making wide changes in grind settings for other brew methods is very easy. Turning the collar about 180 dgrees coarser puts you in French Press territory.
While I have not used the Macap, there is no "start here" sticker and pictures of the collar indicate it is somewhat hard to read. I know folks add their own stickers or paint dots on the collar etc. to help them to return to a particular setting. Like the Cimbali, the grind setting is changed via a worm screw, so wide changes require lots of thumbscrew turning.
The Cimbali has a numbered setting ring that shows through a view window in the front. For the most part, the usable espresso range is about 3 to 5 (or thereabouts). There are four detents or clicks between numbers when you turn the adjustment knob and you can stop between detents. French press is at about 19-20, and while not nearly as simple as adjusting the Mazzer collar, it can be done, and return again with the numbered indicator ring.
With any of these grinders, if I did a lot of other brew methods, I'd prefer to have a second grinder. Grinding for a press pot is best done when you can run the grinder empty so that you are adjusting back to espresso territory with the motor running and an empty hopper. While I never do this with a full hopper, I suspect the Mazzer would be best since the grind setting can be adjusted more quickly.