It's been a little over a week since the iPhone 18 Pro models launched, and we want to hear from MacRumors readers. What do you think of Apple's newest iPhones? If you upgraded from an older phone, was it worth it? What about upgrading from an iPhone 17 Pro? What problems are you running into? Anything you love so far? MacRumors readers have already been sharing early opinions on the MacRumors forums, and there are interesting discussion threads to read through. For early reviews and hands-on images, make sure to check out the first impressions and photos thread . People have been taking…