To be honest the netgear range of routers are crap with their stock firmware. The XR500 with dumaOS is brilliant. I have had 3 netgear routers and the last 1 was the R7000 which I returned within 24 hours of buying it as their user interface (genie) is garbage. the other 2 ran on their old interface but are ancient now!
If you do decide to buy another router and refuse to buy the XR500 (which would be a shame as dumaOS is superb) I wouldnt touch a netgear router as without dumaOS like I have said are crap in my opinion!
Thanks for that I will do more research before my next purchase but I cannot justify the price tag of the xr500 and 3/4 of that price is for Duma OS it's just ridiculous I can buy 2 copies of Windows 10 for that price all I see for that money is a nice easy to use gui and geofilter which is pretty much redundant nowadays anyway