Since you asked me to respond here in another thread, here are my opinions:
•BenQ ZOWIE XL2546 - unless you care about backlight strobing (anti-motion blur) I'd not recommend this. It has great ergonomics, good built quality, pretty good colours for a TN panel, horrible viewing angles, typical for TN panel

DyAc is actually THE best anti-blur tech I've tried, no brightness impact, manageable crosstalk, but this monitor is fairly old already (2017), and my unit actually produces pretty significant amounts of overshoot on both overdrive (AMA) settings (although not very visible in CS:GO). It also has significant ghosting issue with AMA off (undershoot, smearing). My unit (and not only mine from what I've found recently) suffers from really noticeable pixel inversion artficats. Overall, I am very disappointed with XL2546 at this time, perhaps I'll try a different unit, but I think it's just how this monitor is.
•Gigabyte AORUS KD25F - I do not recommend this, mediocre monitor that loses a direct fight with new gen 240 Hz IPS panels. As for a TN panel, its performance it a disappointment, in my opinion. You can compare test results from Hardware Unboxed review.
•Asus ROG Swift PG258Q - Not recommending this one. It's an old TN panel from 2017, its overall performance does not really match up to current new gen 240 Hz IPS and newer TN panels anymore (from what I see on TFT Central and RTINGS tests, it has input lag even more than twice as high comparing to some newer monitors, you probably would not feel it, but still). There's just no sense in getting yourself into having and old boy like this one. There are better options available now, if you ask me.
•HP Omen X 25f - I'd recommend this one, actually. I have not tested it myself, but I've seen reviews for it, and they were very encouraging. I'm actually thinking of buying this one and test it myself. According to RTINGS, X 25f achieves 2.1 ms average GtG response time, which is amazing and top-class TN performance. Input lag is also very low.
•MSI MAG251RX - I own this monitor and I recommend it. It's the new gen 240 Hz IPS panel with TN-like performance, but free of typical TN downsides, like worse picture quality and bad viewing angles (colour shifts). I recommend you watch Hardware Unboxed review for this one on YouTube, it's a detailed review with response times, etc. At the moment, I actually like this monitor more than I thought I would. If you want the best of the two worlds, these new 240 Hz IPS panels are the way to go.
Also, you might be interested in other new gen 240 Hz IPS panels, like
ASUS TUF VG259QM. It's also basically TN-like performance IPS panel with maximum refresh rate of 280 Hz. I tested the bigger version of this monitor and it was pretty cool for competitive FPS. I also recommend Hardware Unboxed, TFT Central's and RTINGS reviews about ASUS TUF VG279QM (the results are probably close between the size options).
Dell Alienware AW2521HF is also an interesting 240 Hz IPS specimen. There's a review from RTINGS about it.
And for the last, you might want to wait till September, I heard Zowie is about to uncover their new flagship monitor then, that is going to replace XL2546S, as it was discontinued and is no longer produced. Zowie has redirected their resources to make the new model for XL2546 series. You can read about it here:
viewtopic.php?f=2&t=6206
Hope this helps
