Scott - None are ideal, but they do the job. I've got two Foleys - a large and a small. I've got one that goes on my KitchenAide Mixer, and I've got a very old one that was Lynda's grandmother's. It works the best. It is shaped much like a funnel and it has a mortar that is about the same size and shape as the funnel part, but 1/4th the diameter of the funnel part. It works the best, but I'm guessing this thing is pre-WWII. We've just put up another 12 quarts of tomato sauce that was squeezed through the smaller Foley or the old unit.
The Foleys are OK. You just can't put the pressure on them like with the old mortar mill. There are a number of imitations online and in stores for about $25. I seldom use the electric one.
I just finished up a gallon of bread-and-butter pickles. Now its time to go finish repairing the riding mower so I can mow before it is time to take my grandson and his girlfriend fishing. It is at a DNR owned lake that is managed for big bluegill. Lots of medium size bass, as the bass are catch and release only.