i play NU occasionally on the CAP server on shoddybattle. Thats the best place to find NU battles.
Basically, the metagame right now is that medicham is the glass cannon, linoone is the deadly 1 turn set up sweeper, gardevoir is the best SPA, Regiice is the special wall, Miltank is the cleric, and persian is the lead. Thats basically the bog standard right now.