TheLostSwedeDo not buy if you have multiple users sharing the same frequency band, as this is a 2x2 router on all bands.

discrownedSorry, I am not well versed in WiFi stuff... but I was planning to buy an AP that has the same MU-MIMO 2x2. Is there a real impact on having only 2x2? ( I think WiFi 7 supports 6x6 on each band but I didn't saw any AP with that ).

TheLostSwedeThere's obviously a limitation when it comes to consumer devices, but ideally you want at least one band that's 4x4, assuming you have multiple simultaneous users at home.
That way there will be less sharing/interruptions, since a 4x4 radio can work as two 2x2 radios, even if it wouldn't quite be the same, as long as MU-MIMO is enabled.
99% or more of client devices today are 2x2 or 1x1, so if you connect more than one 2x2 device to a WiFi router, they'll end up fighting for the available airtime, which can be a problem when gaming or using some kind of real time sensitive applications like video conferencing stuff.
Not suggesting you should game over WiFi though, but some don't have a choice.

One option with this specific router is you can put the real time sensitive stuff on the 6 GHz band and use the 5 GHz band for other things, with 2.4 GHz for your other stuff that lacks the higher bands.

My warning was also more about the high numbers, as this seems like it has higher-end radios than it really has, due to the BE9400 model name, but we're reached so high theoretical speeds now that it's kind of silly, but it also requires that you have a WiFi 7 radio in the devices you want to use with it to even being able to sync at those speeds.
As an example, my phone syncs at 2401 Mbps with my router and I can upload at around 1250 Mbps to a local speed test server on my NAS, so you get around half the sync speed or a bit more on WiFi 6 routers, which is plenty fast for most wireless devices.

discrownedThanks for taking your time on answering!
I was surprised by your comment because I used to live in a house with 3 other people and we made extensive use of WiFi ( i was the only one with a cabled PC ). we were using an ASUS AXE7800 and it never run quite well. We reserved 2.4 for the IOT devices, and the other 2 bands for everything else and the connection was not as smooth as I expected of a 300e router at the time.
I will not need to many bands for my next router/wifi now since I will be alone and will use cable for my main pc. But I wanted to buy something a little bit future proof.

CifuTri-band 9400 Mbps (half-duplex, and in laboratory environment), yet you have one 2.5Gbps WAN (full-duplex).

Read: we lie in your face, as every WiFi router marketing brossure do in the past two decade.

Perhaps would be nice a "honest review" about the harsh reality...

PixelTechGuessing the price will be $250-300?