Poison is poison so it would remove all of them from my knowledge. Regarding the healing and control, it really depends on your team comp. If you let us know who you are using that might help in letting us know what might work better.
I use water main sasuke 3star hiniata and gnw kiba and i use shark bomb with quick heal neurotoxin and the critical atk chasei don't have poison tail yet which i will use i'm rather looking for opinion thou everyone says healing is better for azure fang but i find using shark bomb plus neurotoxin a great way to go if you think a party heal skill is better could i get a explaination
I like the party heal because it helps to remove debuts and to ensure my other ninjas can live longer to get that one extra CD gone for their mystery. But everyone plays it differently. Depends on your team combo really.