If you want the best camera, iPhone 7 Plus will be the way to go. It’ll have the dual-lens camera.
When iPhone 8 ships next year, the Home button will be gone as well, and much of the bezels along with it. That’s also the popular expectation, at least at the moment.
Apple’s chief design officer, Jony Ive, is a minimalist who wants every component of every device to justify its existence by how much it’s used by how many. If the headphone jack isn’t used by everyone all the time, it’s in danger. If the Home button can be removed, it will be removed.