A thumbs up for OpenWrt. I had been running a D-Link DIR655 before I got my WDR4300 setup with OpenWRT. Moving to OpenWRT fixed a good amount of problems I had been having with zeroconf announced services on my local zeroconf services. Netatalk, specifically, would only work for the first hour or so on the DIR655, but with OpenWRT on the WDR4300 it works perfectly.

The configuration is really quite fantastic, and you can do pretty much anything you could want.