Actually, I owned the 300. And while I did find it made a differnce, I would say it was more of a "tweak" than anything - not a miraculous transformation of my audio system, basically. It was someone what of a "tweak" basically. Like any tweak, yes you try it, and maybe it does and maybe it doesn't do some benefit. But then I did it for audio equip only.
Would I suspect a change in a video image for a tubed TV plugged into it, which likely pulls more than 300w? I would suspect that on a small 32" image, you wouldn't notice enough reduction in any potential video noise, or see any increase in color saturation to make it worth a couple of thousand dollars! But that's me.
But, I'm still curious to what he finds out. Maybe it is a huge improvement. What do I know.
Well you could read the reviews and see what they say about doing such a thing. Basically, if any improvement, I predict like I said - maybe some video noise reduced - not much else that you couldn't get by simply tweaking the adjustment of the TV. And likely not more of an improvement than you would get over a good line conditioner, Monster power strip, etc.
But, yep, could be WAY wrong. I just think it's a bit of a stretch and overkill, with diminishing potential results likely. I suspect the law of diminishing vs. the huge cost of such an item, makes no sense.
So yes, please update us as to what you find. I'd like to be proven way wrong on this one, really...