[Elecraft] K3 Filters: 2.7 or 2.8???

[George]

I'm wondering which filter would produce the highest transmitted audio fidelity; the 2.8 khz or the 2.7 khz?  My natural voice quality can use all the help it can get!  It seems the 2.8 is a higher quality filter, because it is an Inrad, but wouldn't its steeper skirts tend to "pinch" the transmitted audio?  I suspect there would be little discernable difference.

George, N4YM