Like Jeff, whilst I am a fan of Kaspar's work, I have ended up using Widget Logic alot more than Widget Context simply because it's easier to define the display of certain widgets using the standard WP template tags just by copying and pasting from a Notepad document, rather than having to configure several different lines.

The new interface looks interesting though. Perhaps one function that can be introduced in the future is the ability to copy settings across from one widget to another, since sometimes several widgets have the same display criteria.