First of all, I really think the real advantage to a blazer is the material they are made from. It is incredibly durable, even moreso than regular vanes. Also most rests a shorter higher profile vane will allow easier total clearance for. What kind of rest do you shoot for hunting?

I am wrecking nocks and arrows and vanes with my broadheads at 40 yards with short 2" blazers on my arrows so they do steer quite well. 4" feathers work great too though and look fantastic, I recommend treating them though to be water repellent so they are a bit more durable.