Ipod 2nd generation..

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Hey all I have been wanting to get an Ipod touch 2nd generation 8 gb but iv heard the only difference between the 1st generation and 2nd generation is the speaker since you can get the software update...and i can get the 1st generation 16gb for the same price as the 2nd generation 8gb... So Can some one help me out...What should i get and what are the differences