I currently own the latest Airport Extreme and am looking at switching to the Express because of the Extreme's erratic behavior (wireless signal completely disappears, sometimes able to reconnect, sometimes not). We have a max of about 5 machines connecting to the router at any given time. Is the Express any more reliable than the Extreme? How about its range compared to the Extreme? Based on pure specs, the Extreme seems like overkill for my application, but I don't want to get something that is underpowered either.