I also have had very good luck with a Panamax unit. I have an older 1000+ model that removes input power in the case of excessively high, or excessively low line voltage. It does not rely solely on sacrificial components.
In addition, provides an accurate multi-LED line voltage monitor display, and delayed turn-on/off power outlets.
Whether you believe in improved sound from conditioners or not, a unit like this provides a minimum amount of protection every A/V system should have IMHO.

[This message has been edited by DaleB (edited June 01, 2003).]