[Elecraft] K2 & Power Line Noise

[Larry Kendall]

I'd like to get some opinions on the K2 audio filter options.

In last year's mobile QSOPs running with the K2, the power line and similar noise were show stoppers in some areas. 

I've already ordered the K2 noise blanker and am also considering one of the 2 audio filter choices. As this K2 will be used for mobile contesting, I can't see me fiddling with complex menus in real time during a mobile run. So, I'm not sure what the best choice is for me.

So far I've used the K2 for CW only and CW is my primary need for noise abatement.

Can someone who has had CW experience with the K2 AF option(s) and NB for wideband/pulse noise interference provide an opinion?

I'm also curious just how much more effective the KDSP2 is than the KAF2 for reducing interference.

Thanks,
Larry
K5END