I've used this little guy probably a dozen times over the past couple of months, and overall I've been very satisfied.
However, I am someone who is willing to spend about a hour cranking and cranking for about 8 cups of flour.
If you're not in a rush, you want to tone your arms, and want a very simple machine to grind flour and meal and such, this is a good mill for you. Turn on some music, roll up your sleeves, and let your mind wander while you grind away. The simple, delicious taste of freshly ground whole grain flours in your cooking and baking will make it time well spent. I really like it.
On the other hand, if you're someone who wants to quickly grind a large amount of what-have-you and get on with your life, this is not what you want. Output is slow, it's a little on the rickety side, and you definitely have to speak up to be heard over it.