I vote "no" for Sidewinder
I thought a Sidewinder would be a useful addition to my toy chest - but it was not. The thread doesn't wind evenly, it gets thick at the top then starts filling in more at the bottom. Also, it doesn't always stop when the bobbin is full - I end up moving the bobbin to the thread post and winding the excess onto another bobbin. This means I have to sit and watch it closely and I have better things to do. Fortunately, I have a machine that will wind bobbins without unthreading the needle so have started using that. It winds evenly and, I think the tension is better. Strange that there isn't something that is sturdier - it is light weight plastic and almost like a toy. Sidewinder was a waste of money for me.