Well I am no means an expert in these things, I think that for the promo video you would be better off working in something like cinema 4-D or 3DS Max.
turfster: Fantastic seller person, shipped promptly and it got here quickly. Even did some stuff before hand for me and saved my cheap butt a ton of time.
Spiicyice: Awesome buyer, paid quickly, was great to deal with.
Seriously. These guys are beasts.
Just like the title says, I need to build the cheapest possible full size PC. Cost takes priority over everything but I prefer an intel based processer.