It might not have been the 2-blade heads fault it might have been all mine, but you know we have to blame something....
I've been using Woodsmans for years on my cedar shafts and Snuffers on my carbons when I use my compound. Both have proven themselves over and over, big holes and great blood trials. Don't want to switch what isn't broken if you know what I mean. I do want to try the Snuffer glue-on heads. I think the Snuffers are made a little better than the Woodsmans and hold up better though the Woodsmans have never failed me. They sometimes can't be reused after a kill.
BTW I finished the last three of the first dozen arrows. I've got something really special planned for the next dozen as far as the fletching goes. I'll post up some pics when I get a few done, but it will be a month or so.