Rubber screws any good?

Solution

+1. They are great for minimizing (eliminating) vibration and keeping noise down. I always use when I can.

+1. They are great for minimizing (eliminating) vibration and keeping noise down. I always use when I can.
 
Solution
Standard case screws for my Corsair 900D, I use Cooler Master Jetflo's and the included screws are almost double the diameter of the holes for the 900D. 900D front case fans thread into the case instead of the fan, which means a ton of vibrations.