Welcome to the Night Hawk Club.
Especially with all these new internet enabled devices (sometimes more than 1 per person, got a new LED Smart TV today as well) it's worth paying through the nose to get a decent router, mine cost £250 from Hong Kong.. plus the signal strength increase all devices downstairs get 5/5 bars usually instead of the 2-3 from the default ISP router, a great router but it's v expensive. Netgear Nighthawk R8000 X6 AC3200