if you have line issues (and that is a MASSIVE IF) then there are many better steps to take.
if you have been sucked in as to how bad your power is by either of their marketing materiels... then please understand that the term power conditioner is a meaningless term.
If you need a voltage regulator... ok
If you need a surge supressor... ok
If you need a UPS... ok
in all of those categories there are many better. IF you need anything at all.
just hanging out, rollin with the flow.