Never though I would make a thread about this, but I guess I have done more odd things.

Anyways, I live in my grandparents basement (GEEK ALERT) and I'm trying to make it so im not so noisy when I'm playing bass or wowing the ladies. Anyways, I've been looking to put a door at the top of the steps. I see many different kinds of doors, but which would block sound best? I assume a solid-wood door would be better then a hollow-wood door, but I can't seem to find one at a reasonable price! My granny mentioned something about plastic resin doors or some dump....any word or tips? What about Bi-Fold Doors?