What is the major difference between the 2g and 3g versions?I notice alot of the members here are using the 2g.Im looking to purchase one and my first thoughts are to get the 3g 32gb.Ive read that the newest ones cant be jail broken yet but soon the newer ones will be able to be jail broken.My question is should i just purchase a 2g or go ahead and get the 3g and just wait for the jail break.What do yall recommend? Another question.I keep reading about jail breaking the ipod touch,then i read about tethered and untethered jail breaks.Im confused.What is the difference between the two? Another thing.I really want to be able to use the skype or similar program(line2 maybe?)to make calls.From what i have read this can only be done with the 32gb or the 64gb?Or this can be done with the 8gb also? I have read that the 32gb and the 64gb are built different and are faster.Is this true? Thanks for the help.