[Elecraft] Filters for weak signal 160 meter CW and crowded contest bands

[Dana Roode]

I've seen lots of discussion about K3 filters so here's my question.
I've got the 400 hz 8 pole filter and it works well.  During the ARRL
160 contest I had trouble "running" due to someone else doing so about
300 hz up the band.  I was thinking about acquiring either the 250 8
pole or the 200 5 pole.  Any thoughts?  I have not seen any data on
the 200 hz filter, but the 250 seems more like a 370 hz filter if you
look at the filter plot.  Which do I want?

  Dana, K6NR