I’ve got an Xperia Z1, took a while to warm to it, due to it being a huge slab of glass. Finding it really usable though, great call quality, magnetic charger, Sony’s skinning of Android is nice and lightweight, very good camera, waterproof! I wash it down post rides and don’t worry about the rain.
There’s tons I love about it. If I were buying again though, I’d get the Z1 Compact. I wouldn’t get too caught up on the wording, it’s still bigger than an iPhone.
Prior to this I had a Nexus 4, never really felt the love for it.