I am currently running an Iwaki MD70RLT. My wife hates the new pump. Our system is in our living room and she says it is too loud. I guess it is time for a new pump. I have plenty of room in my sump so I am looking at going with a submersible pump. I am looking at the waterblaster hy7000, diablo DC 5000 and the Sicce Syncra 5.0. Key word is quiet and dependable. Any suggestions on these 3 pumps or a similar pump?