tentimesover, if you had used Power Pro, Suffix, Sonic, or any other similar constructed braids, you would know that the Fireline Braid is very quiet in comparison. No superline is going to be as smooth as a single strand mono or fluorocarbon.
The quietest of the non-8 strand weave superlines is Stealth since it is coated and sort of has the voids filled in. That coating will dissipate with use though.