If you olny need to feed your coffee maker, MM's good enough.
Positive Product Points
If you only brew coffee with coffee maker, vacuum, and French press, MM would be a good choice. Also, for a new commer in coffee area, it is very stright foward and easy to use and clean.
Negative Product Points
The design of the container can not totally fit the outlet of the grinder, also, the container is not easy to clean. Also, coffee can not be ground evenly, there's usually helf coast and helf fine powder in the container at the sametime.
I got this grinder with a very low price and equally got high satisfy with the proformance. My girl friend also like this white small size grinder very much. But, do not expect this grinder can do anything more than grinding for coffee maker. Frankly, I would not buy it if it charge me more than one hundred dollars, but the market price is $125. Somehow, depend on the quality and life of this machine, the price is over charge. I have used several grinders including some sold in Asia only. If you trust Japanese, try Kalita's C-90, or if you really want to get a cheap but have a 50mm burr thing, go get a 600N from Taiwan. Kitchen Aid's burr grinder, capresso's burr grinder, and Baratza are also very nice choices.
I bought a refurbished one on eBay only cost me 25 bucks. If it is not under a $25 tag, I think I will choose Kitchen Aid or other model in the same price range.