Orbi Ax4200 vs Nighthawk Ax6000

I've used (and still have) a Nighthawk AX8 AX6000 (RAX80), I probably was one of the first to receive the first AX router available on the market some years ago (preordered it a long before).

Indeed it performed very well and it alone covered almost completely my 3-level house.

But the problem was that in most of the rooms I was able to get only 2.4 GHz coverage.

Then I switched to an Orbi AX6000 system with 3 devices (RBK853).

With this system I was able to get also 5 GHz coverage in a large part of my house.

Now to choose between a single router and a multi device mesh system you should consider the area that is to be covered, and if you wish to get a 5 GHz coverage as wide as possible.