Bone animation or Spritesheets ?

While doing my assigned task for the week of coming up with a basic set of moves/combos it comes to my attention that to make it look flashy and neat with little more advanced combos we will be in need to use sprite sheets. I will need more time to play with the 2D bones animation to see if we can make these moves/combos look as awesome as possible. If it is too much of a limitation I'm thinking if we might be able to use both techniques or come up with some sort of solution. This I will be bringing up into our next group meeting on Wednesday 6th April.