I was originally going to get the 2.4GHz model, but due to a little personal budget surplus I was wondering if it would be worth the extra money to get the 2.53GHz model. I'll be buying it at an Apple retailer (not the Apple Store) so I don't think the 2.8GHz will be available to me, am I correct?
Also, about how long after the original announcement do Apple retailers get their first shipment?
Also, about how long after the original announcement do Apple retailers get their first shipment?