As someone who's owned both brands and currently owns neither, I do like many models that both brands bring. There is a lot I dislike about Tag, when it comes to cheapening out on some of their models {formula series}. There isn't anything serious I dislike about Oris, no more than other brands. However, in spite of my higher level of dislike for Tag, if I had to choose one brand it would be Tag. They offer such a large variety of models and I believe their current level of quality to be the highest it's ever been.