I bought the Deluxe Sidewinder during Black Friday sales for $39.99. I have a Viking 1+ and those bobbins won't wind on the cheaper one. I think that I broke my old Viking 5230 by winding bobbins for my Bailey (it doesn't wind bobbins that well), so I bought the Sidewinder. I use cones on a thread stand and found that it didn't wind them tight enough even w/the tension disks tightened right down. I now wrap the thread around the hook on the thread stand and get nice tight bobbins. I like mine and would buy it again.