Hi, this is the only place I found where - I believe - this question would fit.
Basically, I am going to the US flying from Spain and I plan to exchange some Euros into Dollars. I am interested in bringing as many

and

to the exchange bureau so that the travellers coming after me get them when exchanging and can distribute those notes so that I - hopefully - obatin some
exotic hits. However, I also thought that the bureau may bring to the bank all those

and

and then my hopes of getting some hits will be gone. Consequently, I thought that maybe bringing

or

to the exchange bureau would be better as they stay for longer in circulation.
Also, where do you think I should exchange that money? In Spain or in the US?
If anybody is willing to help me, I would be thank it a lot.