Hi xectis,
a friend of mine used to have a Samsung NX1 with some lenses. I was impressed with the speed and accuracy of the AF. The images looked also very good. I never would have thought, that Samsung is able to get so far with its first serious round-up of cameras. There are other reviews out there who report very positive reviews about that camera.
The reason why we do not have a dedicated Samsung section here is, that they quit the photo market with their N system and there simply are not enough models and not enough years selling them to have a big enough userbase for an extra forum. At least that is what I have thought.
But if you find more Samsung system users and they are interested in, we can easily change that and make a specific Samsung forum for it here. But we need for that at least around 10 users who use these cameras here and are willing to participate and help other Samsung users here.