tl-mr3420

I have BSNL BB at home for the desktop. Now I want to use the internet in my tab, phone and laptop. So, I was thinking of buying one wifi router. But now confused between Asus RT-N13U B1 and TP-Link TL-MR3420. The reason for chosing these mainly is that I also have one beetel mf190 usb modem...