I'm currently using a TP-Link WDR-3600 dual-band router, on top of the OR modem. It seems to be fine. If it weren't good enough, my next choice would be one of the Asus RT-N66U units.
At some point soon, I need to do something better with family protection on the internet (I might not like government censorship of the internet, but I'm fine with Dad doing it
). One of my prime checks was for a device I could load DD-WRT onto, to aid me in my evil ways.
I've seen enough reports of the HH5 rebooting to be wary of it.