The range and data throughput of a bidirectional connection also depends on the other end, and the values are usually much lower than the RT-AX89X can provide. The RT-AX89X is dual-band, so there is a range for each band. In addition, the transmission power is not the same in all frequency ranges and has legally prescribed maximum values. So the question of which is the best cannot be answered unless you could test them all in the same environment.
I operate the router in AiMesh with an RT-AX92U and can thus cover the flat around corners very well.
The RT-AX89X is a good device and above all has enough capacity to serve a large number of clients. I am satisfied with it.
The device is quite large!

Hello
I can't say which one is really the best.
But I have had very good experiences with the Asus RT-AX89X.
Greetings