Good to know, thx. I got a 54G2 recently for someone with only G devices. It was only something like $30, same case style, but it was lacking the DHCP Reservation button they show in the manual for that 610N. The 610N is $169.

I noticed the 120N has DHCP Reservation too, and it's only $50, it's not dual band though. If you have mixed speeds on the network, it will default to the lowest speed, whereas dual band, like the 610N or the Airport, will operate at N and B/G frequencies simultaneously.

If you have all N devices a single band like the 120N will do.