I've been trying out that evo rhydon, it just doesn't die O_OIn todays pre-vo corner:
Eviolite Rhydon is a fucking boss. Walls so much shit to hell and back, sets up a Sub on the switch, has over 400 defense and HP allowing to set up multiple SD's on physical attackers, its ridiculous. Special attackers hurt but it still has nearly 200 SpDef allowing it to easily get off a strong hit from behind a Sub with is great QuakeEdge coverage.
CB Zweilous takes the position of best dragon in the tier. Between CB and Hustle, its Outrages rip apart unprepared teams. It is really great except when its getting parahaxxed.
Moltres has also been doing very well with a toxic SubRoost set, sometimes I'm able to go through entire teams by itself. Just try to keep rocks off the field or pack a spinner.