anyone impressed by better IEC plugs?


I have tried cords and now wonder about the better ($30) replacement IEC chassis A/C parts. The ones I am interested in are all copper... The standard ones are steel. Any experience out there? (the naysayers, or "can't POSSIBLY be heard".. can stay OUT of this thread, thank you.
elizabeth
Wattagate has a nice female IEC cable end for $24.00. Check out their web site. They may have the male chassis mount plugs.
not much feedback, but where can you find these?...I have a B&W ASW 3000 sub with a zipcord for power that I'd like to replace. I have to believe it will make a sonic difference.