Most of the guys around here are shooting the supercarbons either the magnums or the supremes and i've heard nothing negative about their shafts. I've personally been shooting the supercarbons now for about 2yrs and have come to like them so much that now thats all i buy and shoot. They are made by Nationwide archery which is owned by Parker and located right next to the Parker facility and from what i've been told they are indeed made their at the facility in VA. They make three types, Hunter 45/60 with .006 straightness, Magnum's 55/70 with .003 straightness and their top of the line shaft the Supremes 65/80 with .001 straightness. Their cost is very competitive when compared to other brand carbons around here and are actually a little cheaper. The ones that comes with the low end Parker package bows i think are the (Hunters .006) and the ones that come with the higher end package bows are the Magnums (.003)
The majority of the locals here shooting in the 3d tournaments are using the supremes and i've heard nothing but positive feedback on that shaft. I've been hunting with the Magnums for about 2yrs and have taken several deer with them and i have one shaft that i've killed 3 deer with and it is still going strong so i know they are durable. To date i've bought about 4 doz of the magnums and have found them to be very consistent with their straightness and weight tolerences. I've had no trouble getting them to tune with practice points or broadheads and their performance in the field has been excellent.
A friend of mine at the local bow shop liked the supercarbons so much he started stocking them in his shop and he said now they are his #1 selling shaft. IMO they are very good shafts and i would recommend them to anyone looking for a quality carbon shaft.
www.supercarbon.com