[CQ-Contest] Bandpass Filters

[w5zn at w5zn.org]

Does anyone have experience with the SureFire BF-100 Bandpass Filter 
System?? This appears to be the same unit sold by Array Solutions as the 
Bandpasser II by Hamation.

Does anyone have experience with how the DX Engineering DXE-419-P  
Bandpass Filter compares to this unit??

Asking for a friend..........not really, I just couldn't resist saying 
that!!!  :-)))

73 Joel W5ZN