GAZZMANZX6  The reason I originally bought this software was that it was the only one that supported my scanner (Umax 2200 USB) when the makers dropped their support.

I'm glad I did though as it is so much better than the Umax software with many more functions and it gives great results, even with poor quality originals.  
(Version 6.5.5r1)

FIRE_DRAGON  My favourite in this version is the print functionality. The layout functions allow for fast placement and output. The color management works great.

With the Auto Adaptive Contrast Optimization I could refurbish many badly photographed pictures that I had already given up on. I could even retain all teh details in the highlights while using this feature.

The Overall workflow is very intuitive and I learned most features of the software by watching the tutorial videos on the silverfast website.

A nice piece of software for an affordable price.   
(Version 6.4.4r4)