Is ease of use a priority? If you simply want to make a fresh cup of coffee without the hassle of a lot of cleanup, a blade grinder is the way to go, and many users say they work very well for a drip coffee maker.
Do you just need a grinder for spices or seeds? In that case, don't spend the big bucks. A $20 blade grinder works very well for these items. Some grinders can also handle nuts, but you may be better off using a good food processor for that.
Are you a coffee connoisseur? Burr grinders crush beans slowly, which preserves flavor and aroma -- so if you're looking for the best possible taste and fragrance, go with a ceramic burr coffee grinder. This is particularly important if you drink espresso, which is one of the most challenging grinds.
Do you want doser or doserless? A doser is chamber that is separated into sections. The sections rotate so that each one can be filled with a single dose of ground coffee, which makes it possible to grind, hold and dispense enough grounds for several cups of espresso in quick succession. Most coffee aficionados prefer doserless because they don't like the idea of the beans sitting in the machine and perhaps getting stale. Doserless machines are also easier to clean.
Stepped or stepless? Stepless grinders do not have presets, rather they have an infinite number of grind settings. They are not as easy to use as stepped grinders, but true connoisseurs love them for the fact that they completely control the grind.
Value expectations: The dollars and cents of it
It can be daunting for the average person when they first start researching coffee grinders. Sites where passionate coffee aficionados gather can be quite strident in their opinions, and quite contemptuous of anything they don't consider a "serious" grinder. Some of these folks have such sensitive palates that they're rarely pleased unless they have a professional barista-quality brew.
We'd like to say this: Don't be intimidated. If you have a standard drip coffee maker you'll probably be perfectly satisfied with a blade or less-expensive burr grinder. Even these, reviewers say, raise the taste level of a cup -- or pot -- of coffee without the need for a several hundred dollar grinder. In fact, unless you have a super picky palate, one of those less-expensive grinders will be fine for most specialty coffees, and work especially well for pour overs. If nothing else, start small and work your way up to more expensive options as you become more knowledgeable and experienced in the art of coffee grinding.
Elsewhere in this report:
Best Reviewed Coffee Grinders: The six best coffee grinders, as identified by professional tests, expert reviews, user reviews, and our own analysis.
Best Blade Coffee/Spice Grinder: This is a case where inexpensive does not equate to cheap. These little workhorses can grind coffee beans, spices, nuts and seeds; one would be a great addition to your kitchen.
Best Burr Coffee Grinder: These top-of-the-line coffee grinders are for the serious coffee aficionado and are an absolute must for the best-tasting brews, say experts.
Best Manual Coffee Mills: Manual coffee grinders are just small, burr grinders that deliver high performance at a very low price.
Best Coffee Grinder for Espresso: Espresso drinkers are the hardest coffee fans to please. For them, we found the highest-rated coffee grinders to achieve the perfect grind.
Our Sources: Links to the expert and user reviews we used to select the best coffee grinders, along with our assessment of each reviewer's expertise, credibility and helpfulness.