Wow, this thread exploded quick. Overthinking what is a simple solution unless the OP lives directly under a radio tower or has a dozen microwaves in his house.
Buy two of any brand of decent wireless AP, run two network cables to ideal locations in your home for coverage and mount them. Disable built-in wireless on the router. Plug APs into router, call it a day.
APs/Routers advertise max range under ideal lab-created circumstances: aka they lie.
Devices try to display a complex measurement in a graphic of five little bars: aka they lie.
You can fix this for less than $200 and an afternoon of housework.
Buy two of any brand of decent wireless AP, run two network cables to ideal locations in your home for coverage and mount them. Disable built-in wireless on the router. Plug APs into router, call it a day.
APs/Routers advertise max range under ideal lab-created circumstances: aka they lie.
Devices try to display a complex measurement in a graphic of five little bars: aka they lie.
You can fix this for less than $200 and an afternoon of housework.