Wireless Setup - Airport or Other

How does Apple's Airport Extreme compare with other Wireless Routers? As I am replacing my modem, I am considering a wireless modem/router or a modem with a new Airport? Would appreciate any wisdom or advice. Is there any point in waiting for Apple's next incarnation of the Extreme which may or may not have wireless AC?

Thanks

Personally I wouldn't buy the current version, although I have one which I bought some years ago and which now lives in the spares cupboard.

With only an internal aerial I didn't find the wireless range all that good, it's only got 3 usable Ethernet ports (you need the fourth for the modem) and it doesn't support native IPv6.

It's OK as far as it goes, but you can get much better routers for the money. Even the next version will have to be pretty special to get me to part with my Asus RT-66NU.

(Which doesn't have AC wireless either, but with the speed that the Asus can run at I don't need it )

I've only just found out that Asus do an AC version: £168 at Amazon.

Looks very tasty but, as I haven't got anything that uses AC, even I can't think of an excuse to get one