Some results: Next, after the slight disappointment of KAZI's finish I decided to go with Enlighten, because I had seen Sluban in some local shops and I had some faith they had done some research. Not only that, while building I actually got a little bit giddy of the smooth fit of each part onto the next.
Clearly these parts had some time put in to make generic parts stack in a neat way.
What also caught my eye in the first few steps is that the bricks supplied were smaller than would have been efficient and sturdy.
So I suspect this brand actually makes the minimum required number of different size bricks to make it's models.