Non-current limiting power conditioners

FWIW, Several of the suggestions do not regulate the output voltage from main
swings like the APC H15 does. This means if power sags during heavy loads or
when your AC comes on then these devices will not boost the voltage output to
compensate. Sagging voltages is one of the reasons that electrical equipment
can end up having a short life - in some cases it may even affect performance.
(The H15 is actually the basis for a Rotel conditioner RLC-1040.)

Why spend $500 just to get a glorified power bar with MOV's and filters when
you could buy something serious (even at this entry level price).

For various ..... political .....reasons, I'd avoid Monster.
My Panamax is decent, good protection levels, several zones and an isolation transformer. Also protection for phone and small dish / cable. AND, as if that wasn't enough, a volt and amp meter a small work light (flex) and 12v control.

Look into the Equi=Tech Q series balanced power conditioners. I have experimented extensively with balanced power, trying various isolation transformers from the major transformer manufacturers. For the past 4 years I have been using a DIY balanced power conditioner with separate trsnsformers supplying my analog and digital components. I am using an Equi=Tech Q type isolation transformer for the analog components. I experience no current limiting, and there is a clearly noticeable improvement in my amp's low-end performance. I can't imagine ever going back to plugging directly into the wall.