Differences in electric outlets

Another question if I may, I see that some of these are cryo'd and others not- any real audible benefits from cryo-ing outlets?

Thanks to everyone thus far with you comments. I am somewhat of a skeptic as well, i.e. bought a few different power cords, PSAudio and a few others and think that the only one I really noticed a difference from the stock cords on was Audio Art Cables PC.

Photon46, is there a 'name' that FIM stands for, any reason you went with that?