I don't remember what I did originally to get Tomato on there. Probably flashed DD-WRT micro and then TomatoUSB over that.

I did just finish rebuilding from latest source code and upgrading to the new image, but that was just point-and-click in the Tomato GUI.

Tomato vs. DD-WRT? It comes down to taste, I suppose. Tomato is powerful with a simpler GUI, and great QoS. DD-WRT has multiple SSID capability and a horribly complex web GUI with somewhat more capability than TomatoUSB.

Cheers