I'm a great big YEAH!! I love mine. I have a 1950's Singer and my bobbin winder on my Singer quit working. It needs a part replaced and I haven't done it yet. I bought my little pink bobbin winder and it is so quick and easy to use. I don't have any problem with the bobbins winding right. I think when that happens maybe the thread wasn't threaded on it right. When I first got mine I didn't realize there were arrows to show where the thread should go.
I wouldn't be without mine! I thread 30 bobbins at a time and this side winder is so much faster than either of my two other backup machines and it is less trouble to get out and use than my backup machine.
I have a clear plastic container with a smaller clear container inside on one side of the bigger container. I put the filled bobbins in the bigger side and the empty ones in the smaller container. Then when I run out I just stop and fill the bobbins. Doesn't take much time to do!