Actually, unless you live in area with very a poor power supply, a power condiitoner isn't needed, as all equipment has some power condiitoning/surge supression(minor) built in. I haven't seen nor heard any benefit to mine, a Belkin PF60. Panamax makes some very good ones which have better cleaning capabilities according to their specs, but they have less suppression of spikes.

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