My house is 3 levels and about 3100 sq ft. I have the modem/router set up on the second level. The kids are on the top and bottom level and the internet signal is really weak. (but I get a good signal on the second level) I've heard good and bad things regarding this modem but I'm wondering if I can/should get another router,,,I'm using Comcast/xfinity Blast which is supposed to give me 50mps. 5 kids (5) netbooks, (5) tablets, (1) Playstation), (1) xbox, (1) Wii U and (2) laptops and 2 Ipads we all stream using Netflix or Hulu. Any help to get this going faster would be appreciated. I was also wondering about an extender, if I went this route would I need one for each level? and how far would my MPS fall? HELP! :-(