It looks like the 160NL isn't in the supported hardware list on the OpenWRT site, though... Just the 160N. That seems to clash with what people here are saying?
Anyway, I have an aging WRT54GL I'd like to replace by something that also runs Linux, but I hadn't previously found anything else like it, so I'm happy enough to hear about the 160NL and will probably get it soon (I also run tomato at home).
At work, we just replaced our WRT54GL by something a little bit more enterprisey (a DrayTek with dual WAN configuration), but had to install dnsmasq separately on one of our servers (it was previously running as a part of tomato).
I really like the slickness and full-featuredness of tomato, I hope the author will update it sometime soon.