Need buying advice : TP link TL MR3420 Versus ASUS RT-N13U

I need a wifi router that has both WAN and 3g connectivity..I have done many studies and found 2 products 1.TP-Link TL MR34202.Asus RT-N13UKindly let me to choose the best one (including other suggestions not only above two products )My preference is, router need a good wifi signal strength (range ) as I need to get good range both in ground & first floor ; if possible in 2nd floor..THANK U FOR UR VALUABLE SUGGESTIONS

go with TP-Link, i have used tp-link with many usb dongles, like reliance, tata-indicom, airtel etc and have found it to be robust, i havn't used the Asus one, so cant comment, if you want signal to cover both ground and first floor, i recomment keeping the router in first floor, wifi coverage would be best when the router is at high altitude