best sprak plugs for twin spark 1150 GSA

[Michael R1150GS Adventure]

come on then - what do you use?

mines a 2003 twin spark GSA

iridium? copper core?

Help!

 

[(RIP) DitchWater]

I don't bother with the expensive offerings and save the excess for a take-away curry because I can't tell the difference (I have had them for the primary sparks), and it's an 1150 GSA so I don't ride it like RSV.

 

[chad]

wots a Sprack plug