I'm using an AirPort Extreme 802.11n (5th Generation). It's a great one too. I'm not actually using it as the router, but as a wireless switch that feeds my old D-Link DI-604 which performs the actual routing function. I did it that way so that I could put the router in the basement with all the Ethernet lines running to it through a gigabit switch. The house has wired ethernet in most rooms. That way I could put the AirPort Extreme upstairs in a central location. It has good range too, thru walls into the garage and out onto the deck.
The AirPort Extreme, D-Link DI-604 router, and the D-Link DGS-1008G gigabit switch are rock solid reliable. Literally, the only time they ever get reset is when the electric power goes off. Wish I could say the same about the Time Warner equipment.
The jury is still out on the Arris gateway from Time Warner. It's new here and came with a recent upgrade to faster Internet and phone service with their Signature Home plan. The Cisco DVR they have me is erratic and I think it will need to be replaced.