This deck continues to evolve!
My previous version of it is http://netrunnerdb.com/en/deck/view/276044
After suffering a really embarrasing loss to a NEXT gold, I came to terms with the fact that unless i put 3x Datasucker in, There might come a time where I am done in by a suprise 4 strength sentry. At first, i removed the datasucker to put in 2 Knight. This card is actually pretty great with the strategy of the deck! It can act as a psuedo blackmail itself when attached to things like Lotus Field, Tollbooth, a ton of ice with 1/2 subs would cost much less for you to break then the corp to rez, giving them some hesitation. If they decide to rez, leave your knight there. If they decide to trash and install, then they're throwing their money and clicks away. If it's a LOW value ice, one that's potentially cheaper or as cheap as using your other breakers, make sure to move a Knight somewhere where it can be more menacing.
It ended up working incredibly well for getting medium counters early, so i went to 3x Knight,
Currently, I have two flex slots and the meta-oriented Clot.
I have considered Eater, Incubator, Parasite, and Datasucker. Eater is THE facechecking breaker, but I am not trying to do TOO MUCH facechecking (to keep my Blackmail potent). With Incubator, I would be trying to get the corp to purge viruses, giving me more clicks. Medium can do that, but Medium + Incubator is incredibly dangerous. An early game Incubator sets the tone the entire match, threatening a Medium install + a blackmail on RnD for big value and a basically guaranteed purge turn afterwards. I think it's where i'm going to be testing next for the deck.
comments and questions are kool, I don't have a huge diversity of matchup experience, but i can tell you what i WOULD probably do~~~