Hi- I am planning to go to Spain/France/Portugal next month. I plan on purchasing an iPOD so I can mostly use SKYPE for cheap calls home (the whole buying a phone with GSM unlocked and such is a bit confusing for me so i am shying away from that, hopefully my hotels/hostels/cafes will have cheap or free internet access). Maybe also download a language translator. I don't need anything besides these features and I don't plan on using it much after my trip (most likely will give it to one of my young nieces). I was brwosing the craigslist and found the 2nd generation is half the price of 4th. and 3rd generation is somewhere in between. Which generation would suit me the best without spending extra cash? Thank you.