Thanks all for your great input. I would have never thought a buckle can cause so much discussion.
Firstly, the belt arrived and I'm keeping it as I said I would. I left a bit of chance for someone to sway me. Although I liked the idea of asymmetry, I could not put my finger on what bothered me to begin with, but rabbit had put it perfectly - the asymmetry of the second one looks distracting and that confirmed the decision to go for Team Belt 1.
A few clarifications though - both belts are by Esprit and both have the brand name on it, the photo of the second one just does not show it well. They are made of the same type of leather. I was completely fine with both satin and shiny options, it was just a case of the buckle shape really. I wanted to make sure I was not missing to see something in it.
Also, I dislike logos very much and avoid them whenever I can, but for some reason this one I have no issues with. I've seen other casual white belts with embossed names on the buckle by other brands which are present here and this one is not even noticeable in comparison. It's subtle enough, does not make the belt look overly casual, and most importantly for me - I don't think of Esprit as some pretentious brand, it's actually good quality stuff which had never let me down. My husband has shirts that go strong for years and last winter I had bought my favourite coat to date, by Esprit. So even if I do some unintentional advertising, they have deserved it form me