[Elecraft] 1.8 or 2.1 kc Filter

[Mike Miller]

Anyone have experience with 1.8 and 2.1 kc filters for the K3?
Trying to decide which one to get..

I am a DXer exclusively......not a contester...
work CW rarely....


Does the audio from 1.8 sound too pinched....? 
I just dont want to hear a 59+10 signal that is 3 kc..from the frequency I am listening on....

any thoughts? on what filters to get..

Mike Miller KA5SMA