Greg has "router paranoia" over the recent security flaws that have been found. Should he pay more for a router? Leo says no. It's not the price of the router -- it's a flaw in the router firmware that is rarely updated because they are so cheap.
Leo recommends going with an open source OpenWrt supported router. Asus makes routers that supports OpenWrt, as does Buffalo. There's also Tomato, another OpenWrt router firmware. What about the Apple router? Leo says that it's easier to configure an Apple Airport with a Mac, but Greg should get the Asus router.