One the originals questions of this thread was/is does handling the stock coil packs help in killing them, I suppose its not worth considering, because if they're going, so is performance, and spark plugs get checked.
I was told that to check them use a multimeter set on Ohms with one on earth (base where it bolts on) and inside sparky hole, a reading over 0.9 is dodgy and over 1.5 stuffed. I havent tried it yet just lazy I guess.
Confirmation anyone?