I pretty much agree with ghostrider except that I do not care for Pellon's wonder under these days. It used to be a good product, but I have trouble peeling the paper off now. The company send me 5 yards as a replacement and I had just as much trouble with that. I peel it off the backing now until my supply is gone and use it like the Misty Fuse. That works well. Head and Bond lite also works well for me.
The product and method you use really depends on your project. Therefore, I use many different products and methods.