here are some good maps from gg servers ive played on in the past
300-http://www.fpsbanana.com/maps/28281
gundust-http://www.fpsbanana.com/maps/30645
angry overpass-http://www.fpsbanana.com/maps/17458
cinema-http://www.fpsbanana.com/maps/17816
dirt arena-http://www.fpsbanana.com/maps/55727
alienz-http://www.fpsbanana.com/maps/29530
fortress-http://www.fpsbanana.com/maps/26039
glass tank-http://www.fpsbanana.com/maps/50014
awesome map indevelopment-http://www.fpsbanana.com/maps/21234
mr arena-http://www.fpsbanana.com/maps/68525