Hope to see a featherweight in my future soon. Have looked at those "born" in the 1930's to 1964. Does the age of the machine make a difference or do they all work pretty much the same? I am trying for the best price for the best machine that fits into my budget and have not considered the year "born". They all seem to have the same attachments. Do any of you have suggestions as to important things to look for specifically in featherweights? Appreciate your help all you talented people!