The issue we have is a long, thin house with the main living room on one end and bedrooms on the other with the kitchen smack in the middle (lots of appliances to kill signals). With all the walls in between it's just not possible to get a good signal in both ends of the house, so bedrooms get the wifi AP and stuff tends to be cabled in the living room. If I sit next to the AP it'll pull 100mbps fine, but considering we have cables everywhere it's not worth the effort as even then, it doesn't touch gigabit for speeds across LAN.