Considering that ASUS has End Of Lifed the GT-AC5300 I would say do NOT buy any ASUS Router. I bought one and they have not released a firmware update for it since August 28th, which is an absolute joke. The KRACK fix has not been rolled out and they don't seem to care at all about updating the router. I regret blowing $450 on it.
I would say get something from Synology or even Netgear....from a company that gives a **** about it's customers and actually updates things.
I went from RT-AC5300 to GT-AC5300. Big mistake...
Had 2 GT-AC5300 both with defect 5ghz bands. Hoping a new firmware will fix it. Whenever it does come out.
How the router is now i won't recommend anyone to buy it, too flawed.