I love Pfaff machines. I have had two 130's with the coffee grinder attachment. They work pretty well but I have found that the coffee grinder makes a lot of very "Tinny" noise when you run the machine. The ones that I have had without the grinder on them were much quieter and seemed smoother when they ran. The noise was pretty distracting to me to be honest.
There is my two cents on that.
~G~