Let's see. I have a Viking 6490 ?, a great Kenmore made by Janome,a Janome 6600 , 6 301s (3 black,3 mocha, 3 long bed,3 shortbed) and an 1890 New Home Treadle. How many is that?i much prefer to piece on the 301s. IMHO, there is NO stitch comparable to one made on a straight stitch machine. My 6600 is used for quilting with the Accufeed. I really hate the sloppiness of the snap on plastic feet so never piece with it. The Kenmore made by Janome sews beautifully. I keep 2 301s in travel bags. I try to rotate the rest. I'm glad everyone fesses up about their collections. My friends think I'm nuts but when I need a part for my 301s, I just go to another that I purchased for less than the part would cost alone. No down time with these old machines and best of all- no motherboard to replace!