A friend did on a 04 GT and they failed. Caused a misfire, tripped the CEL and found out that pieces of the electrode were missing. Just get NGK plugs. The stock ignition system is top of the line and there is nothing out there that can make a noticeable difference.
I have to spend $500 do get my 01 Integra's ignition system up to the same level as the Elantra.