What smartphones are people using nowadays?

My phone's just bitten the dust and now I need to look for a new one again.

Thought I'd test the waters and see what kinds of phones people on here are using nowadays and what for, what features set them apart if any etc

Bonus points if anyone's managed to get mainline linux running on them either via KVM or bare metal

Edit: Thanks for everyone who talked about their choices of phone, I am now writing this on a fairphone 4 and am quite happy with it so far.