Finally I received the MSI MAG251RX.
First impression was very nice, in the package you can find everything you need. Hdmi, Displayport, separate power supply + cable
They even gave me the plugs for the screws (for the stand) + 4x screws for Vesa mount
Design is very good, I actually like the stand, even tho its simple but there is more place for moving keyboard close to monitor, when you eat or something. The back of the monitor with leds (which you can set using gaming osd) and the logo - beautiful.
I can deal with no swivel and no rotation, because I actually don't like it when my monitor isn't equally parallel to the desk. I like to have it straight in front of me, even tho you can actually move it a little bit to your left or right, but like only a little.
Rotation - down and up is very good, even too much for me (up rotation is for standing people lol)
Ghosting Test (Ufo Motion Blur test) is very similar to Asus VG279QM/VG259QM (80 OD) with a slighty visible white halo around (Faster Mode), but not noticeable in game. The motion clarity I think is a little more clear on MSI vs Asus, but its hard to tell.
What is very important is than when you compare the Overdrive of Asus vs MSI in game, on MSI there is no such visible overshoot like I saw much much more on the Asus (80 OD). That is very good improvement and difference. Because If you are used to clean motion blur without this white thing around moving enemies (like on TN) you definitly will like it more on MSI than on Asus.
On asus you need to use 80 OD(3,6ms) because its the best overdrive for 200+ fps but the trade off is much more visible overshoot.
This problem is not included on Faster Mode on MSI. Well Done. Faster Mode on MSI (3,2ms) has slighty visible overshoot (even less imo) like on 60 OD(4,0ms) on Asus but in this case with faster response time.
Anti Motion Blu Reduction on MSI has less aggressive crosstalk and much more usable than ELMB on Asus. I finally can think about using this in the games. Yes you can't adjust the brightness, but you can adjust the contrast (although I recommend using max 70 contrast because over that the screen is to bright and less you see.). Anyway I actually like less brightness with AMB, Im not a fan of using too much brightness, because when playing I always don't have sun in my room (blinds on the windows) so I can deal with that.
Processing Lag is very impressive (I didn't meassure this but I trust the Hardwarde Unboxed in this).
The 0.29ms processing lag (!) which is same on the Asus (0,30ms) - one of the lowest input lags
+ you need to add to that the average lag over the frame which is just half of that, so we takes 4.16ms(240hz)/2 = 2.083ms. Take that 2.083 and add it to the processing lag, 2.083 + 0.29 = 2.373. That is how the Hardware Unboxed got his 2,37ms input lag.
For example the famous very decent 240HZ TN Acer XF252Q (which I still have for testing) has 2.00ms processing lag (compare it with 0,29ms on msi or 0,30ms on asus - smoooked lol)
What is next is the Gaming OSD (you need usb cable for that) for setting everything you need without using the yostick behind the monitor (even tho its very simple and smooth).
You can set sharpness, image enhancement (good for more visibility - works similar like sharpness).
Night Vision on A.L is interesting because it adjust automaticly the shadow boost based on the screen, altought I like Stronger Mode much more even tho it is slighty worse than Shadow boost on the Asus
Unfortunately I don't know why the FPS mode is much less saturated than User Mode (the colors are almost grey lol), which I don't like it, so I don't suggest using it - just use the racing mode instead.
This is my settings I managed to get and I switch them just by clicking on choosen Mode.
1)User for desktop/Chrome/FB

2)Racing for games (because its only one mode which is more saturated and you cant adjust the saturation in any other way - which is sad but you can easy deal with that simply using this mode without going to nvidia panel or using any other apps who boost your colors)

3)Cinema for movies or netflix (with HDCR because it boost a little bit colors and brightness - im testing the A.L Night vision on it, because it was set up there on default.

Hotkeys are also good to have if you wanna adjust the brightness in game using only two buttons:

Cons:
- Gaming OSD - the crosshairs are useless because they are simply way too big

-short cable from the charger, the charger is just standing on the floor (instead of lying lol)
Overall, this is for sure superior Top1 240hz IPS monitor, which easily beats the Asus, due to better Overdrive with less overshoot and more usable Anti Motion Blur. Imo it might beats TN monitors with turned on Anti Motion Blur. The colors are slighty better vs Asus though but I like it. Gaming OSD is OP to have and is very handy. This might be very universal monitor. But overall I think i still will accept the fact that is hard to beat the motion clarity of the TN monitors, so if u are competive or want a monitor only for gaming the benq zowie XL2546s or any other 240hz tN like mine which i bought for tests = Acer Nitro XF252QX, would be slighty better for fast fps shooters.
The more informations of this monitor you can find in posts by RLCScontender.