i used the blazer this spring for a trial... they didn't increase my speed any, but they did fly as good as the 4" feathers that i use now. the one thing about the blazer is that they are smaller, so if you make an error while shooting it will be enhanced. also, when shooting a fixed blade broadhead they will simple not track as good as a full length vane or feather. i believe this is a marketing gimick; don't waste your time and money... the benefits as simply too small to waste your time... great vane for the target shooter though.