I've been using my Dlink DIR825 for several years and have been pretty happy. But the new step daughter is getting a new apartment and needs a router, so I've used the situation as an excuse to upgrade both my cable modem to DOCSIS 3.0 and my router.
I've come down to the Cisco e4200 and Netgear WNDR4000. I want simultaneous dual band, and these seem to be the best couple of routers around at the moment. I'd like the option to run media in the 5Ghz band if I want to to use Xboxes as TV extenders, which would require the ability to stream 1080i and possibly 1080p over wireless without drop outs and buffering. Right now, I run all extenders wired, but that might change down the road.
I'd also seriously looked at the Asus RT-N56U, but reading the forum at small net builder has scared me away due to the concern about incompatibility with Cisco VPN on wired connections. I work from home, so that's a critical issue I can't afford to deal with.
The Cisco and the Netgear seem to have similar hardware, with the Netgear CPU running faster. But I've never had good luck with Netgear network hardware. The concern I have the the e4200 is the drop off in speed with both radios running big bandwidth transfers, but in reality I'm not sure I'd ever notice that.
The main advantage for the Netgear is that it allows WDS repeating and bridging. Not something I worry about too much in this house, but if we move to a bigger place next year as planned, it might be nice to have...
Anybody have thoughts about either of these, or know of any other good dual band options?