I have a Belkin PF60 and it does it's job, it lets me know what each component is using for power. I like being able to see the voltage fluctuations from 118V to 124V. I have a pretty good electrical system around my house and haven't noticed any difference with it hooked up or not.

I have heard some very good things about Panamax as well.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70