This is a great review site for networking stuff.

http://www.smallnetbuilder.com/

Best reviewed AC1200 router $90 http://www.amazon.com/gp/product/B00JZFG6QS?ie=UTF8&tag=small0c-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B00JZFG6QS

Best reviewed AC1750 router $130 http://www.amazon.com/gp/product/B00N2ROH0C?ie=UTF8&tag=small0c-20&linkCode=as2&camp=1789&creative=9325&creativeASIN=B00N2ROH0C

If you go with a good higher AC router, you start pushing even closer to $200.

But check out that website, see some reviews. A 3rd ranked in any given AC category router will be solid, but who knows, might be a good bit cheaper.