Hey I have some vanes that I bought at walmart ( 1 per pk of 12 for $1.00 ) and was wondering about the height of the vanes in relationship to my current setup ( 4" 3ea vanes on 1deg offset ) . The 5" vanes looks to be slighty shorter than the 4" in height. Is their any advantage with better arrow flight, even tho the vane is 1" longer but slight shorter in height and compared to the 4" vanes that I currently have ? Also, have anybody use the vanes "Quick Spin" that NAP have been advertising? any feedback ?