I've used Zowie 2430, 2546, 2546K monitor before. I decide to give some pros and cons for this monitor. These opinions are mainly contrasted to 2546K (240Hz). My PC spec: Intel 13900k & Nvidia 4080. Pros: 1. 540Hz with Dyac2 is really oustanding. In Counter-Strike 2 (CS2), XL2586X indeed provides clearer and sharper image, especially when I was moving and swipping mouse. The improvement of DyAc2 from DyAc+ is observerable. However, I think this monitor needs next gen cpu (AMD 9000X3D series) and gpu (RTX 50 Seris) to maintain 540 refresh rate in CS2 during high presure (lots of utilities or players). 2. XL2586X has more vivider color. In addition, it offers advance define of color vibrance. This function satisfy each individual to set up their preference. Cons: 1. "No Signal Detected (NSD)" is bothering me. This issue happened at two cases: (a) starting pc, and (b) exiting fullscreen mode games. No matter I connected via DP or HDMI, the problem still happened. (a) When I turn on pc, the monitor will show up NSD and become in black. I can only reboost the monitor to make XL2586X work properly. Please check the video of the issue I upload. (b) If I'm playing fullscreen in Counter-Strike2 for 4:3 ratio with stretch, XL2586X has high probability to get NSD issue when I adjust video setting (in-game) or exit the gmae. The solution is same as (a), I need to restart the monitor. 2. Less functional bottons at the back of monitor. XL2546K has 1 more botton that I can customize the function. I used to set up Mode for the botton. It makes me change Mode faster. Overall, it's a very good monitor. It meets my needs in competitive games. However, the cons make me fell inconvenient. Althogh I have reported NSD issue to Benq Support (Case# 00586305), the technicians have no solution yet. Due to the cons and lack solution, I take 1 star off.