Neither are toggling clans. Just solid pvpers. If you think they're hacking, you're wrong. If you tried toggling on mcsg, the new xime would catch it and they'd be auto permbanned. Nowadays people can get the most insane hits and even the most legit of people can be called hackers for no reason. Hackers are almost non-existent. I feel the only thing around now are people that macro and people that edit their registry keys using (RegEdit). In either case people shouldn't call anyone out for hacks.
My list:
Eternity- I want to battle everyone. But the amount of active clans to battle are running low. At the moment I don't see any challenge in the community.
Rebels - Have a lot of people. Talented. Good leaders. Been around forever.
Rivals (idk if they're a clan) - if they are still around these kids were pretty solid
Infinitive/Clique- both have a small group of people that are always on and they work together somewhat better than other clans. I'd wish clique would battle.
Invincible / Defiance - invincible has a good small group which helps bc they are decent in team fights. They turn on and off. Don't know much about Defiance except their CB record
X- only other clan that deserves to be mentioned.