So I'm about to pull the trigger on a 15" Retina MacBook Pro and I'm contemplating one aspect of the setup. I'm going to hold onto this computer for a while... I'm talking about 5 to 6 years and maybe more. I have an 08 MacBook now that's still going strong and the only reason I'm replacing it is because the battery just does not, regardless of replacement, have to oomph I need and the age is really starting to show performance wise (and I'm still on Snow Leopard). That said, I'm getting the base model retina with the 256GB SSD and do plan on getting the 16GB of RAM as a BTO option but I'm curious whether or not the add the 100 dollar upgrade to the 2.6Ghz Intel i7 up from the 2.3Ghz chip. I assume that, since this will be my machine for many years to come, I might as well add the processor, but if the lower clock rate is going to help out with battery life and general wear and tear (lower thermal output and heat on the system), it might be worth it. I don't do a huge amount of heavy work (other than music production with reaper and mixing and such) so my main interest in the retina is to have a machine that will be supported and continue to be fast well into the future so as to ensure my investment goes the furthest it can. Any thoughts on what I should consider with regards to the i7 upgrades?