Hi Linus!
My favorite thing about the Xperia Z2 is the front-facing speakers as we all know listening to music or watching videos on most smart phones is a real issue so this is the perfect phone to resolve this issue.
As for my favorite thing about dbrand, I took a couple of minutes to look around their website and what surprised me the most was the wide range of devices they customize as well as the cool designs!
Hope I win!