[Simplex123]

I am using a Linksys WRT160N right now and for some reason I am not getting a very good connection or range with it in my townhouse. My room is about 12/13 metres away from the router on the same level, but a lot of the time it would disconnect randomly and I wouldn't be able to find my network. This happens like a few times everyday. And when I'm right outside the house, I would not even be able to find my network..

I'm not very familiar with routers, so what router would you guys recommend around the $100 range? Are the dual band ones worth it? How do they exactly work?
There are usually 4 computers using the network just browsing and some torrenting.

Also how is the the Shaw Wi-Fi modem? How would it compare to a $100 router?