I've read in different places that you should check to be sure that those Organ needles will work in your machine. Also, don't use the embroidery needles for regular stitching in your machine because they are too long. I've also read that all of that wasn't true. So, go figure.
I love the titantium needles machine embroidery needles because I have a lot fewer stitching problems with them. I especially love them for machine embroidery as they last forever. For simple sewing like piecing, less expensive needles seem to work fine for me.