We're nowhere near the Great Depression. Personally, I trust McCain on the economy a lot mroe than I trust Obama or Clinton. He realizes the value of free trade and balanced budgets and he doesn't pander to special interests the way many American politicians do. Whether he can win the public debate on it is another matter, but it's not a given that the Democrats will carry through on this one.
Oh please, McCain is a member of the party which has always created america's budget deficits. I don't know what 'special interests' you think he is independent of, but the old monster is completely controlled by the military industrial complex.