I am in the market for a router for sure, but need to provide wireless access reliably to my main home (3K square feet), and a guest home about 250 feet away from the main home.  No gaming is necessary.  I would like the router to have at least 4 gigabit ethernet ports.  Wireless N is preferable and dual bind would be nice (especially if it enhances range, but I am not knowledgeable on that subject).  I do have a HD TV that is wireless and a BD drive as well in the main house.  The needs in the guest house are mainly just wireless g/n access without HD needs at this time.
Wondering what selection of router and/or range booster would help provide reliable wifi access.