Friends, I need to choose to buy between 16-GB-ipod-touch 1st-Gen and 2nd-Gen. (a) 1st-Gen is about USD80 less than 2nd-Gen in Cost. (b) The physical shape and Size of 2nd-gen is more attractive than the first. Please advise if there are any other difference between them and if it is worht spending those extra 80 USD for 2nd Gen.