Has anyone tried any of the scratch remover kits for ipods/cell phones??

[Steelmaker]

I was just curious if anyone here has tried any of them and if any of them actually work. I've seen something called "applesauce" and I've seen a kit called "idrops," I've seen something called "displex." All of these products claim to remove scratches and restore the newness of your ipod or cell phone screen. I'm only hesitant to try any of them because the reviews I've read on these products seem very divided. Some say it works like a charm while others say it didn't work and made their screens worse. I'm like jeez, who do you believe?!?