I like having my 3 bladed heads aligned with the vanes for two main reasons:

1) I am a visual perfectionist and I like all my arrows to look the same. It just looks better to me.

2) When my heads are inserted into my quiver, if I align all the heads the same then I will not have the fletching slapping together when I shoot. I also hate excessive noise.

Now if you will excuse me, I need to rearrange my sock drawer...again...

The Mouse