I have a wireless g router and a wireless USB dongle. I have just recently moved my pc into another room thus putting a brick wall between me and the router. I am now exxoerience drop outs and poor speeds. The router is fine on wireless devices within the room. Which makes me believe it's a range and obstruction issue.

I'm looking at some wireless n routers as they say they have better range and speed than g. My router currently has 1 antenna and the one I'm looking at appears to have 1 antenna. 

Will the n router provide better connectivity and speed than my g router? Are there certain things to look for? I'm looking at a d-link router.