I'd really like to purchase an iPod Touch (I've been a 1st and 2nd Generation Zune owner, but now I have a Mac) and I'm wondering if this is the time... I'm considering purchasing the 16GB iPod Touch off of the Refurb Apple store for $310... I'm going on vacation to San Fransisco soon, and thought it would be a nice time to begin using it. So what do you all think? Is now the time to buy, or should I wait till September for a product refresh (if one is coming)?