Thanks buddy. Yep, real-life experience is very much appreciated.

Actually, I'm already shooting A/C/Cs, but I'm really liking the slimmer shaft/thicker wall concept for improved penetration. Since I'm shooting a fallaway, I was thinking that the diameter of the shaft really isn't going to affect rest/fletching contact, so I might as well get the best penetration possible. It seemed these shafts might deliver that.