I plan on purchasing the iPhone 6 Plus, Space Gray, 128GB model. However, I want to try it in-store first before making a final decision. I also would rather buy it in-store, but I'm concerned about how long it'll be before that's a realistic option. Based on past experience, do you guys think I'll be able to buy one at an Apple Store within the next two or three weeks? Or will it still be extremely scarce?