Gary,

In my experience using both diffusion and condenser enlargers, the condenser enlargers do give better local contrast. The reason that this happens, in my opinion, is that the condensor collimates the light beams and they pass through the negative much more perpendicularly. This can not but give better delineation to the differing but adjacent film densities.

When I started using a condenser enlarger about 4 months ago, it was almost an "ah hah" experience. Almost as if suddenly the reason for all of the good prints that I had seen and failed to produce had been made apparent.

I am pleased that you found that the results were what you wanted.