I picked HARM.
I hope that the implementation of HARM will also involve an update to the AI to allow targeted radars to shut down and evade shots. I would be severely disappointment if HARM would be modeled as one-shot-one-kill weapon, while operationally the missile had a hit percentage in the single-digit range.
I have written a script to simulate radars evading ARM shots, but it’s ugly as it requires to de-spawn missiles when a radar shuts down (otherwise ARM in DCS continue to strike targets). I hope that AI reaction to ARM gets properly implemented to the base game to do the HARM justice.