I have shot Blazer vanes for five seasons now. They perform very well. Besides that, in my opinion with as fast as the bows are shooting now, the larger vanes are really noisey compared to the Blaser vanes. Plus they're a little lighter and stablize an arrow as good as larger vanes. I would have to agree with RUTTIN, put as much helical as you can and they will perform great. I have a couple of friends that are fletching up arrows with four Blaser vanes with alot of helical. They typically use these arrows when shooting the larger fixed blade broadheads, they claim it makes a difference in accuracey at longer ranges. I can't tell the difference, but these guys are shooting 910's at 3D tournaments. They notice every little inaccuracey, that must be why I can very bet them.