Personally, these three things are some of the most important consumers buy a phone. You want a good design and a nice big screen, but the camera, storage, and battery life are equally as important.
With the Galaxy S8 and S8+, you'll get double the storage over the Note 5, as there is 64GB built-in. Not to mention an SD card and $20 will get you another 64GB. You can easily add a 256GB micro-SD card and have over 300GB of space in total. Perfect for shooting 4K video one the new Galaxy S8+ camera.
Last year Samsung made a big change to the camera. Going down from a 16-megapixel camera to a 12 Dual Pixel sensor in the Galaxy S7 and S7 Edge. It had a larger sensor that captured more light, a fast f/1.7 aperture, and used all the pixels to have one of the fastest auto-focus systems on the market. The results were one of the best smartphone cameras ever released. Often beating out the iPhone in independent tests.
The Galaxy Note 5 uses that same old 16 megapixel camera. For 2017 the Galaxy S8 is using the upgraded 12MP camera setup. Yes, the number is smaller, but that does not matter at all. Instead, you'll have better photos, faster performance, a blazing fast auto-focus, and some of the best low-light performance of any smartphone camera. It's solid, and you won't regret it.
Another area that changed is the front selfie camera. It went from 5MP to 8MP in the Galaxy S8. It takes better photos and video, has a fast f/1.7 aperture, and a wide angle lens.
The Note 5 has a 5.7-inch screen and a 3,000 mAh battery that barely lasts a day.
The 6.2-inch Galaxy S8+ has a bigger 3,500 mAh battery and fast charging. Android 7.0 Nougat on the S8+ is more efficient, as is the new AMOLED display and Snapdragon 835 processor. Samsung also added some battery-saving features and modes for even better battery life. Not to mention extremely fast USB Type-C charging will have you from 0-80% in 35 minutes. Battery life won't be an issue on the Galaxy S8+.