The dual cap vanguard wasn't meant to be a way more agressive core than the bottom or top flip caps. As I understand it, the bottom cap is probably the rolliest design followed by the dual, with the top cap being the flippiest version. I personally don't think that there is another company that can compare with Morich as far as high end.
The ones seemed to be pretty good, but I personally believe that the best One was the first. The BO and the IO were good, but very arcy, and the AO, and TNV seem to sort of defeat the purpose of a pearl ball. They both check up really quickly. I have a AO, and I might try the TNV, but if I do I certainly will try a more mild layout, or at the very least, a very high pin to get some length. With the same layout, as my Awesome Flip, my AO was markedly sooner, with less on the back. The AF with its more mild cover, really seemed to allow the core to shine.
This is all opinion though, every company has good stuff.
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