Ok, I guess I always thought to be truely reliable you had to get rid of the noise first, then worry about singal strength. The only problem I have is with the treadmill (when it's running). What would the best approach be there, a single (large) filter on the treatmill or bridge amplifier? All X10 is fine except when it's running. (I've got 3,400 sq ft and X10 running all the way into the back yard.)