Think these are the ones diamond is talking about...
I picked up a pack of the quickfletch quickspins like pictured above and i'll be trying the bohning stretch fletch as well
Not really any preconceived notions about them except that they look easy to install and from what I hear they are easy to remove if one of the vanes get nicked... honestly never seen the helios ones till just now looking it up. Very interesting... I'll be keeping an eye on them