If you want to protect your components from lightening, power spikes, brown outs etc.. Go with a Furman AR1215 or Triplite LCR2400 (The Furman is quieter- you'll the hear the Tripplite click occasionally).
If you want filtered power to isolate components from each other , The Monster thingies do that, as well as Furman products. I do not know about APC though.