I've been running an RT-N16 with DD-WRT for a while. It's a great piece of hardware. Open source firmware tends to take more effort to setup (like running Linux) but once configured it's far better. I do have to say that Asus' stock firmware QoS is really, really good. It's the best I've seen on the consumer routers I've used and super simple to setup. In a house with 4+ computers, a few torrents, and other downloads running simultaneously had no impact on web browsing. Everyone got their fair share.