Which one is better:

NGK Laser Iridium or NGK Iridium IX?

http://www.ngksparkplugs.com/product...m.asp?mode=nml

http://www.ngksparkplugs.com/product...x.asp?mode=nml

 

Your first link.

 

The NGK R came in the motor. I was told to change them just to be sure I dont have any problems. I really done see why but ok. I bought the IX and put them in but I havent ran it yet. I was thinking of going against what a Honda tech says and just use the plugs that were in it.