Found 2 options for a 17" MacBook Pro. Both very good condition, under 200 battery cycles. Box, everything included. The Early 2011 2.3GHz has 8GB ram and 512GB SSD. The Late 2011 2.5GHz has 4GB ram, 750GB 7200rpm drive. $400 difference. The early 2011 is $1400 The late 2011 is $1800 I am going to likely eventually change the ram and hard drive regardless of which I end up with. It seems besides the hard drive and ram which can be replaced, the only difference is, 2.3GHz vs 2.5GHz. What does the .2GHz translate to? An extra 5 seconds to boot? Faster application opening? What do you recommend?