Power Conditioner for Video under $500?

IMO spend the money on having a couple runs of metal clad 10 gage wire with isolated ground receptacles, metal termination boxes, and dedicated 20 amp breakers. Have the electrician move the motor driven appliances and lighting breakers on the other leg of the breaker box. Putting two receptacles on each run will give you eight outlets to plug into. There's your power strip

It's so common for people to spend thousands on power conditioning without first spending $200-$400 for proper AC wiring. It can be one of the most noticeable and least expensive tweaks going.

I have the RGPC 4 and 12 and both better than the Chang. I seconded the Chang due to his budget and the number of outlets.

I've chosen the BPT CPC w/ HCF-30.

House wiring/breaker-box upgrades to come when it's my house. For now, the PSA PW power cords and PC will provide enough improvement - the power cords already have on their own.

have the electrician move the motor driven appliances and lighting breakers on the other leg of the breaker box

this is a very unwise suggestion as it would completely unbalance your transformer's loading as well as increase IR voltage drop of the phase bearing the entire load burden. Never ever do this.

Update:

I ended up spending more and replaced the BPT CPC with a RSA Haley. Wow. I was shocked by the improvement with picture quality. I thought the 1080p plasma/BD looked stunning before but now it's unbelievable. Even broadcast 1080i improved. Amazing what power upgrades can achieve. I'm a supporter, but I didn't expect that much of a difference with how the overall clarity, detail, color, depth, focus, and especially with the stability of the picture, changed.