Looking for a good phone for me?

I've had my Huawei P6 since it's release now and it's starting to date a little. Not getting the Android 5.x releases and newer are a little disappointing. So I've been looking at smartphones and my budget would be around 300-350 euro's.

Lately, I haven't been using my phone for gaming much, something small for a minute when I'm bored, so games aren't very important. I am however looking for a good camera for pictures, and a nice and fast interface is also very pleasant. Also some business features are appreciated. I've been looking at the LG Nexus 5X, which is € 290 in Belgium, or even a Microsoft Lumia seems interesting, but their flagship model comes at € 540 for the Lumia 950. Their next model, the Lumia 650, doesn't seem like an upgrade from my P6. A Oneplus Two is looking interesting as well. Huawei's P9 Lite is € 300, but compared to a P8 Lite, isn't that much better.

So what would you suggest me?

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