I have the Samsung A5 2017. Its a great little phone and it updated to the Nougat operating system yesterday. It takes some good pictures and the bright OLED screen is easier to see in sunny conditions than many phones in this price range. You need a fairly robust sort of case as it has a glass back and needs a bit extra protection. the Samsung accessories are overpriced and a bit flimsy.Cases I have had in the past have tended to be thicker leather jobbies to house cards, but I fancied one of the thinner ones this time to keep it light and more 'shirt-pocketable'. The Samsung neon looked good but it is surprisingly expensive for what it is. As the phone is water and dust resistant, it will help keeping it near with my woodworking hobby.
Probably have anothrer look tomorrow
If you are still comparing tariffs it might be worthwhile looking at Virgin Mobile which also use EE. They are doing a very good deal on data and minutes at the moment. They will also allow you to change your phone towards the end of your contract, provided you pay the full amount. Often they will buy back your old phone when you renew.