After seeing the retina in person yesterday I was not blown away enough to want to pay the higher price. My 2007 MBP died 2 months ago and I have been anxiously awaiting the refresh before replacing it. So I am leaning towards the non-retina 2.3 with 8GB although the thinness of the retina is hard to pass on. I'm interested in a 256SSD. Should I upgrade to it upfront or wait and have the optical drive replaced with one later? What does taking out the drive do to your warranty? Where do you take it to have done?