what is the best plug,,ngk or bosch

What is your question?

I bought the car in 2006 and the plugs had never been changed ,,and I changed plugs and wire,,,Mass air flow,Now when I crank the car,,it runs fine,but when im stopped in park or drive there is a slight tremor,i thought the plugs seems like a miss fire,,its not motor mounts as I have changed them,,i used bosch plugs before but thought of using ngk or nkg