I have the Netgear WNR3500. the first 1-2 weeks I had it liked to drop wireless connections and or not let anything connect via wireless. But now it is doing alot better, haven't had to mess with it, I don't know what change to make it work. it has been running for about 8-9 months now. I did turn off the DHCP server and now have a dedicated computer doing all of that. the netgear is now just an access point and a switch, seams to be doing fine.
I have the WRT54GS loved it I don't think I ever had a problem with it. it has been running for years. but it is sadly only a G router