I use Floriani Heat N Sta. You iron it to the back of your fabric so that your fabric can't pull away from the stabilizer as your embroidery progresses. I use it for almost all embroidery that I use in quilts.
It also depends on the stitch count of your embroidery. If it is a dense design, I use the Heat N Sta. If it is a redwork design, then I would not use an iron-on stabilizer because when you remove the stabilizer, it puts too much stress on the stitches.
Check out the stabilizer info at
http://www.emblibrary.com/el/elproje...age=techniques
LeAnne