I am not sure who "Isaac" is, but it surely is not me if they advised AGAINST the Silver Puppy. I have always said that for my money the Silver Puppy is the best one to get for home made silver. The SilverGen and Silver Edge machines are regarded pretty highly too and I am sure there are some others.
I checked out a number of machines and decided that the Silver Puppy is the way I will likely go when I get a home machine. The fact that the king of home made silver, JAB, likes it too just confirms my choice.