Penetration Testing: Noisy port scans

[<bdhunter () bkd com>]

Question regarding port scanners.  

Currently use Nmap and Fscan most often and would like to see if anyone 
has compared these two to see which is the least noisy.  I realize that 
both are able to be configured to be "quiet", but does anyone know which 
is actaully the quieter of the two?  Any recommendations of other scanners 
to use would be greatly appreciated as well.

Thanks

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