Here is a list of PCMags top routers for 2014
But, if you have two routers already or even one, I would go with a relay or signal booster. They make indoor and outdoor ones.
Here is some info on repeaters and Boosters which can work up to 1 mile away (note Googles Project Loom has created WiFi routers that work 12 miles away)
Click Here for Info on Boosters and Repeaters
I love netgear routers. Like the NightHawk
You also want to look at the signal dB level, and what you’re sending through.
Here is a great write up on dB's, and other factors to look for when selecting a router. Click Here
Overall, the more power that the router is sending out the further the signal will go. Now, anything with metal in it will create a shielding effect that will do 3 things to the WiFi
- Reflect - or bounce off the object
- Refract - which is change direction when the signal hits a object
- Attenuate - or absorbed the signal
Remember Cinder blocks are made with metal meshing in them. So if you’re in a building with cinderblocks it will stop the signal or slow it down. That is why in old hospital buildings you can’t get a cell phone signal.
Also when selecting a router look at the antenna. There are 2 or 3 types. You want the type that goes all directions. See the guide for more info.
Overall a WiFi signal will go at least 300 feet, for G type, and a clear line of site.