spark plugs

I've had BIG trouble with Bosch Platinums on a different car, so I tried NKG Platinums on my '99 SW1. I thought I'd get a long life out of them, as well as the suppossed benifits.
They're about 1.5 yr old now,9say 30,000 KM), and I started getting ignition noise on the FM radio, but not AM, which surprised me. When the engine got warm, no noise. They didn't misfire.
At night I looked for leaky wires, didn't see anything.
I figured I'd put the old Delco plugs in, and see what happens.
I now have no ignition noise, with these old plugs.
Anybody else have a problem like this?
Could anybody post some feedback on NKG?
Thanks

any plat spark pulgs don't work that great in saturns 1.9. even nkg but i do recomened they non plat ones.

i agree. platinums are not for the s-series. although saturn does now use ngk plugs for their oem replacements, they are not platinum.