What WIFI Mesh Extender would work well with a RAX120 v1?

[Bluejacket]

I am looking to extend my WIFI to an area of the house that needs a stronger signal. The area is up stairs and approximately 1000 sqft. I want to include both 2.4 and 5ghz. Would the AX1800 be possible or something else? I was looking at the WIFI Mesh Extender to make it more like a single network instead of the standard range extender.

Thanks

[plemans]

I've used the EAX80 with my RAXE500 and RAX200 and it worked well. 

But any of the EAX devices should work fine. Its just more about what performance you want.