ALARM is indeed a smaller missile. muchly in term of diameter. but the loiter capability if the emitter stops emitting is clever. something a HARM cannot do. the killing power of the ALARM is still there. But as with the tactics the HARM is forced wit radar operators have learnt to turn their emitters off. something iraqi's got pretty good at i hear. HARM might be quicker though. i'm not sure. i could have just looked that up, but, alas...
"For those whos dreams were taken. Here are a few nightmares. This is gonna shine like a diamond in a goat's ass."