Rats, I totally missed the point. Sorry.
Listen to Sonyad. There are a lot of legitimate, trustworthy vendors--AVS notably among them--and many first-rate projector builders. The specs that HD Projector World claim can't be reilably realized at the price points they're selling for. They. Just. Can't. The fact that they list themselves as a BBB Accredited vendor on their website, while the link above shows they are not, should tell you everything you need to know. Avoid them.