Hey guys! I have a question, where do you buy your foam at? I have Sears, Best Step roll (6mm) for $26.99 (46 in. x 93 in.) Harbor Freight roll (8mm) for $7.99 (Length: 72 in. Width: 24 in.) Pep Boys, Best Step roll (6mm) for $24.99 (???) Or what suggestions do you have? What is better for a foam Iron Man suit, 6mm, 8mm, 12mm?