I had good luck with AirLink routers. I had to setup 5 of them in a building using different setups (channels, IPs and other stuff, 2 for guest, 3 for the business) and they all worked wonderfully. I don't remember the models I set up, but I had 802.11a/b/g routers. Never heard a complaint and I have also heard that they never needed a restart.

They must be good I guess... The last thing you can do, is go buy a cheapo Airport (old version or whatever is cheapest) that would be a 11b model. mainly because the internet gateway is probably no faster than that, and if you want speed, hook up through ethernet