It seems to me that the holiday baking season calls for bunches and bunches of ground nuts. Generally I buy whole or broken nuts and do the grinding myself because it tends to be cheaper. For a long time, I used a hand-crank, old-fashioned model and was pleased with it. It took a long time to do several pounds, however; and the chop wasn't very uniform.
I found a meat grinder attachment for my mixer at a yard sale for $4. I bought it thinking I would occasionally use it to grind meat. Turns out, it's perfect for grinding nuts too. It's much, much faster and the grind is perfectly uniform.
If you have a lot of nuts to grind this holiday season, find a friend who hunts they most likely have a meat grinder and ask to borrow it. Just a few minutes and you can grind several pounds and store the ground nuts in the freezer for future use. I store the ground nuts in clearly marked bags with the amount pre-measured for ease during long baking sessions.