Go with the egg crate foam. The floral stuff is too rigid and it breaks down really quickly.
If you don't need it all, I'll gladly split it with ya. I use tons of that stuff 
Ya, the floral stuff is too hard for what you want.
Look around more before jumping at your first foam find
Theres a store somewhat close to me that does buyouts. I found the foam in their craft/cloth department.