I have been patiently waiting a couple years to replace my 2013 rMBP (it was getting long in tooth about late 2014), but the battery now lasts 30 minutes and it's just, well, frankly, a giant POS. With a Nov 17-25 delivery on my new 15" I simply cannot wait any longer with the battery finally falling off a cliff so I picked up a low end 13" MBP (no-TB) at an Apple Store as a stop-gap (it will either go back or go to into the employee fleet when the 15" TB'ed machine comes). Incredibly disappointed. I understand I went from an i7 w/16GB RAM to an i5 w/8GB but even with no major apps open, just some App Store downloads and file copies, the system is pretty sluggish. I'd expect that from a MacBook, but make no mistake, this thing is *NOT* a Pro. There's not even a load on it yet and it's sluggish on just migrating a few things (no major copies, not restoring from a TM backup, just some file copies and app installs). I hope the 15"ers represent a bit more bang for the buck, because the low end 13" model doesn't deserve the Pro moniker, frankly.