hey guys i need a wifi router.i will use this router with my bsnl broadband and my digisol adsl modem.this router should be able to cover an area of 50 feet(actually there are two floors.on first floor it should cover about 25 feet with multiple walls and the distance to second floor is 50 feet).i have a budget of 3k.there are few models in my mind like asus n13u,TP-LINK TL-WR1043ND(getting it for for 3k),belkin n300....please suggest the model with best range.