Considering that the Qnix is much more popular, go with that one. I currently use a Yamakasi Q270 that I've had exactly one year now, it turned 1 years old 3 days ago. It works perfectly, has 0 dead pixels, and no cosmetic flaws. It works like the day I bought it. I would never pay full price after using a korean monitor for a name branded one like ASUS or Samsung, as there is no point. I recommend QNIX and Yamakasi. I am not familiar with X-star at all... Hope this helps..