Coug, I'm pretty certain that the only difference between the two is the swage and not using the unibushing. I think the unibushing is the better of the two setups though.

As for the nocks getting loose in the carbons... Carbon arrows still have a problem with their inside diameter tolerances. Combine that with molded plastic nocks and the tolerance problems with them and you've got a pain. I've got some carbon arrows that have nocks that are so tight I can't hardly budge them and some that are so loose that I have to re-index the nocks every other time I shoot the things. That's why Gold Tip puts those expansion screws in their nocks.

I haven't tried it myself yet but, from what I've read, putting unibushings in carbons goes a long way to helping out their accuracy. The bushings also reinforce the nock end of the shaft and help prevent splitting.

I'm gonna have to try that one of these days.