National parks as we know the parks are only for animals & wilds birds so it is little bit hard to say which one is best and worst all parks have their own uniqueness & property some parks have large area of land wilds trees plants and some have less i am trying to list here some top national parks of India like

1. jim corbett national park,
2. Bandhavgarh national park ,
3. Bandipur National Park
4. pench naional Park
5. Kaziranga
6. Nagarhole National park
7. Panna National park
8. tadoba National park
9. sariska national park & more

These are very famous and most visited national parks of India so you can visit there and you can enjoy the life of wilds in between many wilds, trees & plants in famous national parks