If you are only after guest access facility, with the ability to fence off your normal home network from your guests, then the NETGEAR DGND 3300 will offer what you need. A problem I had on my router when I used MAC address filtering on the wifi, containing 15 addresses, the router started playing up by losing settings. I put the problem down to lack of memory in the router, and found by getting rid of some of the MAC addresses it solved the problem. I now rely on an extensive encryption key, and don't bother with the MAC address filtering............