I've owned K2 Public Enemies, Line Chronic Blends and Line Anthems.
Public enemies:  Very dead feeling, asymmetrical enough to make riding switch a pain, harsh landings.  (mounted at the suggested mounting point -6cm if i remember right?)
Chronic Blends: Awesome all around ski. Light enough, poppy feeling, wide enough to take in the deeper stuff, responds well on hardpack, decent in the park but slightly too stiff, rides switch very well for a symmetrical ski (mounted -3cm of center)
Anthem: Great park ski, butters like no other I've tried, smooth forgiving landings, rides just as well switch as forward. (center mounted)
Conclusion: While everyone has their own opinion, I absolutely love every pair of Line skis I've owned, they have never failed me.  K2 on the other had have been a let down.  They just haven't given me the same great feeling.  While there's no such thing as one ski for every occasion, the Chronic Cryptonite (which have a very similar geometry as the older Blends) is a very good choice for an all-around ski.  I still spend the majority of my time riding my Blends and ride my Anthems in the Park. The Public Enemies are becoming part of a new bench in my workshop soon.
Hope that helps.