Digital BW, The Print

After reading some posts earlier this week I donwloaded ConvertToBW pro 
and have been trying it out.  As opposed to some of the more 
technically adept on the list, I don't think I could replicate it with 
the PS Channel Mixer!  Question:  I have been using the Prefilter 
and/or Color Response tabs to do the conversion but have stayed away 
from the Contrast tab under the assumption that contrast adjustments 
are better done in PS itself.  Is that assumption reasonable.

Thanks to whomever it was that mentioned this product in the first 
place.  It is much easier to see what you are doing and the effect on 
the image than when switching channels in the Channel Mixer.

Steve