I'm going to be installing a 2011 27" iMac in my 2-story home. Currently, I use a Netgear WNDR3700 Dual Band Router for my home wifi (connected to PC) and it works very well, with coverage all over the house. Should I keep the current Netgear as my wifi router, and connect the iMac wirelessly to it? Or should I use the iMac's built-in airport for the home wifi, and just install a network adapter to my other PC? The Netgear router & cable modem are located in my rec room (same floor, 25 feet away), and my iMac will be located inside my bedroom, but can install the modem there if the iMac's internal router is stronger than the Netgear. Any advice?