I had a choice between mp40s or these, wav was cheaper. More redundancy, the pumps auto shut off if they fall off or taken out of water. But for me it was that they are powered by the 1link. One unit can power up to three pumps meaning I get less wires all over the place also frees up plug space. I have black painted back panal, with the wav able to tilt 40 both ways I think I'm able to keep them on the back wall without seeing the wires.