Ok, guess I was harsh. auralex are not worhtless. The Lenrds are ok to a point. The regular studio foam could be used for side wall reflection taming and general HF slap tamer. But thats about it.
You will have those issues, but in small rooms the low end is harder to deal with. Foam just deals with the HF range, so in a sense it excentuates the low end problem. What happens is that you have no high end and the low end mud being immediate. It might work for vox and maybe a amp room, butfor tracking and mixing, you'll just be fooling yourself.
You have to get the whole spectrum balanced for any decent usage.
Use pins and/or small finishing nails for the ceiling, put bass traps in the corners to start.
Good luck
T