As I suspected, the user experience is greatly improved over the 6 Plus. Side by side, fresh installations of iOS 9.0.1 on BOTH phones, the difference is obvious. Even the little things, like bringing down Spotlight from the home screen and rotating the phone. Disastrous on the 6 Plus, smooth on the 6s Plus. What else. 2GB RAM = win. No more Safari tab refreshing until much, much later. Multitasking is smoother, Touch ID is miles faster. App switching is buttery. Heck, these are just my first impressions, and the difference is SO obvious. Bottom line: If you don't care about the 3D Touch, camera upgrade, 2GB RAM etc, and you don't have ANY speed issues with your 6 Plus, do NOT buy a 6s Plus. If, however, you do notice the RAM shortage on the 6 Plus, and the general UI for you is just hampered, then the 6s Plus will solve all your problems. (The Macrumors article showing individual apps being opened and then manually closed is not relevant. It doesn't even tell 5% of the story of the EXPERIENCE of using a phone).