Every car is different, and every oil is different, so you just have to experiment and see what works..
I have always found M1 to increase noise at idle, and Redline has always reduced noise at idle.
40 is quieter than 30 (all else being equal)
Try using the wooden spoon stethoscope method to locate exactly where the noise is coming from because the best oil in the world won't quiet ticking injectors or relays.