I once had a Blancpain Tourbillon which was 15 seconds fast a day. I understood why it had been sold to me at a 75% discount! Fortunately, I managed to sell it an an auction. For me nowadays, the beauty of the movement, case, dial and hands is insufficient to get me to buy a watch. It has to be reliable, accurate and from a brand with a good after sales service network. The market is very competitive these days and fortunately, there are brands who tick all of the above boxes.