I got a half dozen last year. Weight variation wasn' t too bad. I have no way of measuring straightness or spine.[:' (]
From the very first time I had them fletched up, one of the six would not shoot with the others.
When I hit one arrow with another, they seemed to crack farther into the shaft than Carbon Express did. Also (and I' ve never had this with any other carbon arrow, pultruded or ICS), when I was removing fletching on one, a splinter of carbon pulled up and was removed to the end of the shaft. I don' t trust shooting that one anymore.
I now have 2 of the original 6 left, and one of those is the " wayward son." I don' t shoot them anymore.
I have heard of much more positive results from others, but my experience with them has not been so good.