Hi
Things I've used on the ZyXEL which don't appear on the D7000:
VLAN and Interface grouping, really handy for offering a mobile friendly guest network, all possible on the Billion and ZyXEL, but not the D7000. They did add this to the R7000 after some time so it may arrive.
Have DHCP assign one internal DNS address and the backup as my ISP, this is so I can access from the LAN websites easily using their external host names from an internal DNS server. No problem on a Billion or ZyXEL router, but can't do this on the Netgear. Easy enough to work around by entering manual DNS servers on network settings on the PC, but it would be easier to have this assigned automatically.
Wake on LAN, that has saved me quite a few times and means I can log in remotely to my home PC without having to leave it on 'just in case' and ensure I remember to do so. This feature I've seen on D-Link/Billion and of course the ZyXEL.
No option I could see to convert the unused WAN Ethernet port to a LAN port to have 5 LAN ports, the ZyXEL can do this.
Extend the Wi-Fi beacon interval, this helps reduce battery drain on mobile devices, again Billion and the ZyXEL routers expose this setting. There are lots of settings missing on the D7000 relating to Wi-Fi that all other routers usually expose.
Nice to have the option to plug in a 3G dongle, again Billion and the ZyXEL allow this, considering this is suppose to be a flag ship DSL router from Netgear, you'd think 3G dongles would be supported, it has the horse power to run the drivers. To be fair it isn't advertised with this feature, although I kind of thought it would be given.
Being able to view the VDSL line stats from within the Web GUI, as well as being able to see uptime, NAT session usage and CPU load, I couldn't see anywhere on the Netgear where this information is shown, yet all available on the ZyXEL.
There are loads of settings and statistics available on other routers that Netgear have not included on the D7000, yes the majority people will never need to delve into advanced settings, but some of us do from time to time, and given the price and power of the CPU, you'd think they'd make the effort to provide access to more of the router options to appeal to the biggest audience.
Of course the ZyXEL hasn't been without it's issues, but it's getting better.
Regards
Phil