If you are going to use the same size I don't think it's worth the money honestly. The xx78's use a different alloy and are a bit stronger I think, but they are still aluminum. I think they are also a bit straighter, I would have to look them up.

I think most use them because you can get thinner walled arrows which are lighter, but retain your spine. The down side is because they are thin they are more fragile than thicker walled aluminums.

I mean they are a better arrow, but I don't know if most could tell the difference when they shoot. I have used X-7's and the only difference I could tell between them and game getters was the color and the price. Most all aluminums have pretty good quality control, but the X-7's and xx78 probably have a bit closer tolerances.

Try them and see what you think, that is the only way you will know. I don't bother with them though unless the arrow size I want only comes in the xx78. That is the case sometimes.

Good luck,
Paul