Hey GRZegorz,
I don't think anyone was ignoring you its just that the NGKs seem to work the best on bikes. I drive a Ford truck and I don't use Motorcraft products. They have gone downhill a little. I switched my truck plugs to Champions. I will probably stay with NGKs when I change my bike plugs. I only have 1800 miles, don't need a change yet. Just waiting for weather to change.
Steve
